155729489920

Names of 155729489920

• Cardinal: 155729489920 can be written as One hundred fifty-five billion, seven hundred twenty-nine million, four hundred eighty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.5572948992 × 10¹¹

Factors of 155729489920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 425

Divisors of 155729489920

• Number of divisors d(n): 156
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 59 64 80 118 128 160 236 256 295 320 359 472 512 590 640 718 944 1024 1180 1280 1436 1795 1888 2048 2360 2560 2872 3590 3776 4096 4720 5120 5744 7180 7552 9440 10240 11488 14360 15104 18880 20480 21181 22976 28720 30208 37760 42362 45952 57440 60416 75520 84724 91904 105905 114880 120832 128881 151040 169448 183808 211810 229760 241664 257762 302080 338896 367616 423620 459520 515524 604160 644405 677792 735232 847240 919040 1031048 1208320 1288810 1355584 1470464 1694480 1838080 2062096 2577620 2711168 3388960 3676160 4124192 5155240 5422336 6777920 7352320 7603979 8248384 10310480 10844672 13555840 15207958 16496768 20620960 21689344 27111680 30415916 32993536 38019895 41241920 43378688 54223360 60831832 65987072 76039790 82483840 86757376 108446720 121663664 131974144 152079580 164967680 216893440 243327328 263948288 304159160 329935360 433786880 486654656 527896576 608318320 659870720 973309312 1216636640 1319741440 1946618624 2433273280 2639482880 3893237248 4866546560 7786474496 9733093120 15572948992 19466186240 31145897984 38932372480 77864744960 155729489920
• Sum of all divisors σ(n): 381100691160
• Sum of proper divisors (its aliquot sum) s(n): 225371201240
• 155729489920 is an abundant number, because the sum of its proper divisors (225371201240) is greater than itself. Its abundance is 69641711320

Bases of 155729489920

• Binary: 10010001000010001100110111000000000000₂
• Hexadecimal: 0x2442337000
• Base-36: 1ZJHBFGG

Squares and roots of 155729489920

• 155729489920 squared (155729489920²) is 24251674030743381606400
• 155729489920 cubed (155729489920³) is 3776700826513777215980582207488000
• The square root of 155729489920 is 394625.7593214107
• The cube root of 155729489920 is 5380.0992450011

Scales and comparisons

• 155,729,489,920 seconds is equal to 4,951 years, 37 weeks, 1 day, 15 hours, 38 minutes, 40 seconds.
• To count from 1 to 155,729,489,920 would take you about nine thousand, nine hundred three 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 155729489920 cubic inches would be around 448.3 feet tall.

Recreational maths with 155729489920

• 155729489920 backwards is 029984927551
• The number of decimal digits it has is: 12
• The sum of 155729489920's digits is 61
• More coming soon!