129838722993

Names of 129838722993

• Cardinal: 129838722993 can be written as One hundred twenty-nine billion, eight hundred thirty-eight million, seven hundred twenty-two thousand, nine hundred ninety-three.

Scientific notation

• Scientific notation: 1.29838722993 × 10¹¹

Factors of 129838722993

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4471

Divisors of 129838722993

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 21 31 49 63 93 147 217 279 331 343 441 651 993 1029 1519 1953 2317 2979 3087 4099 4557 6951 10261 10633 12297 13671 16219 20853 28693 30783 31899 36891 48657 71827 86079 92349 95697 113533 127069 145971 200851 215481 258237 340599 381207 502789 602553 646443 889483 1021797 1143621 1356769 1405957 1508367 1807659 2668449 3519523 4070307 4217871 4525101 6226381 8005347 9497383 10558569 12210921 12653613 18679143 28492149 31675707 42059839 43584667 56037429 66481681 85476447 126179517 130754001 199445043 294418873 378538551 392262003 465371767 598335129 883256619 1396115301 2060932111 2649769857 4188345903 6182796333 14426524777 18548388999 43279574331 129838722993
• Sum of all divisors σ(n): 226503680000
• Sum of proper divisors (its aliquot sum) s(n): 96664957007
• 129838722993 is a deficient number, because the sum of its proper divisors (96664957007) is less than itself. Its deficiency is 33173765986

Bases of 129838722993

• Binary: 1111000111010111111011010111110110001₂
• Hexadecimal: 0x1E3AFDAFB1
• Base-36: 1NNAMFU9

Squares and roots of 129838722993

• 129838722993 squared (129838722993²) is 16858093988452986878049
• 129838722993 cubed (129838722993³) is 2188833395556705903862467983280657
• The square root of 129838722993 is 360331.4071698441
• The cube root of 129838722993 is 5063.7012891839

Scales and comparisons

• 129,838,722,993 seconds is equal to 4,128 years, 24 weeks, 2 days, 23 hours, 56 minutes, 33 seconds.
• To count from 1 to 129,838,722,993 would take you about eight thousand, two hundred fifty-six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 129838722993 cubic inches would be around 422 feet tall.

Recreational maths with 129838722993

• 129838722993 backwards is 399227838921
• 129838722993 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 129838722993's digits is 63
• More coming soon!