70,000

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← 69999 70000 70001 →
Cardinalseventy thousand
Ordinal70000th
(seventy thousandth)
Factorization24 × 54 × 7
Greek numeral
Roman numeralLXX
Binary100010001011100002
Ternary101200001213
Senary13000246
Octal2105608
Duodecimal3461412
Hexadecimal1117016

70,000 (seventy thousand) is the natural number that comes after 69,999 and before 70,001. It is a round number.

Selected numbers in the range 70,001–79,999

70,001 to 70,999

71,000 to 70,999

  • 71,656 – pentagonal pyramidal number

72,000 to 72,999

73,000 to 73,999

  • 73,296 – is the smallest number n, for which n−3, n−2, n−1, n+1, n+2, n+3 are all Sphenic number.
  • 73,440 – 15 × 16 × 17 × 18
  • 73,712 – number of n-Queens Problem solutions for n = 13
  • 73,728 – 3-smooth number
  • 73,774 - used in marketing Pepsi, the number dialed if the letters of "Pepsi" are entered on a telephone keypad[importance?]

74,000 to 74,999

75,000 to 75,999

  • 75,025 – Fibonacci number,[1] Markov number[2]
  • 75,361 – Carmichael number[3]

76,000 to 76,999

  • 76,084 – amicable number with 63020
  • 76,176 – sum of the cubes of the first 23 positive integers
  • 76,424 – tetranacci number[4]

77,000 to 77,999

  • 77,777 – repdigit
  • 77,778 – Kaprekar number[5]

78,000 to 78,999

79,000 to 79,999

  • 79,507 – 433

References

  1. ^ "Sloane's A000045 : Fibonacci numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
  2. ^ "Sloane's A002559 : Markoff (or Markov) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
  3. ^ "Sloane's A002997 : Carmichael numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
  4. ^ "Sloane's A000078 : Tetranacci numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
  5. ^ "Sloane's A006886 : Kaprekar numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.