72420312640

Names of 72420312640

• Cardinal: 72420312640 can be written as Seventy-two billion, four hundred twenty million, three hundred twelve thousand, six hundred forty.

Scientific notation

• Scientific notation: 7.242031264 × 10¹⁰

Factors of 72420312640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 867

Divisors of 72420312640

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 29 32 40 52 58 61 64 65 80 104 116 122 130 145 160 169 208 232 244 260 290 305 320 338 377 416 464 488 520 580 610 676 754 757 793 832 845 928 976 1040 1160 1220 1352 1508 1514 1586 1690 1769 1856 1885 1952 2080 2320 2440 2704 3016 3028 3172 3380 3538 3770 3785 3904 3965 4160 4640 4880 4901 5408 6032 6056 6344 6760 7076 7540 7570 7930 8845 9280 9760 9802 9841 10309 10816 12064 12112 12688 13520 14152 15080 15140 15860 17690 19520 19604 19682 20618 21953 22997 24128 24224 24505 25376 27040 28304 30160 30280 31720 35380 39208 39364 41236 43906 45994 46177 48448 49010 49205 50752 51545 54080 56608 60320 60560 63440 70760 78416 78728 82472 87812 91988 92354 98020 98410 103090 109765 113216 114985 120640 121120 126880 127933 141520 156832 157456 164944 175624 183976 184708 196040 196820 206180 219530 229970 230885 242240 253760 255866 283040 285389 298961 313664 314912 329888 351248 367952 369416 392080 393640 412360 439060 459940 461770 511732 566080 570778 597922 600301 629824 639665 659776 702496 735904 738832 784160 787280 824720 878120 919880 923540 1023464 1141556 1195844 1200602 1279330 1339133 1404992 1426945 1471808 1477664 1494805 1568320 1574560 1649440 1756240 1839760 1847080 2046928 2283112 2391688 2401204 2558660 2678266 2853890 2955328 2989610 3001505 3149120 3298880 3512480 3679520 3694160 3710057 4093856 4566224 4783376 4802408 5117320 5356532 5707780 5979220 6003010 6695665 7024960 7359040 7388320 7420114 7803913 8187712 9132448 9566752 9604816 10234640 10713064 11415560 11958440 12006020 13391330 14776640 14840228 15607826 17408729 18264896 18550285 19133504 19209632 20469280 21426128 22831120 23916880 24012040 26782660 29680456 31215652 34817458 37100570 38419264 39019565 40938560 42852256 45662240 47833760 48024080 53565320 59360912 62431304 69634916 74201140 78039130 85704512 87043645 91324480 95667520 96048160 107130640 118721824 124862608 139269832 148402280 156078260 174087290 192096320 214261280 226313477 237443648 249725216 278539664 296804560 312156520 348174580 428522560 452626954 499450432 557079328 593609120 624313040 696349160 905253908 1114158656 1131567385 1187218240 1248626080 1392698320 1810507816 2263134770 2497252160 2785396640 3621015632 4526269540 5570793280 7242031264 9052539080 14484062528 18105078160 36210156320 72420312640
• Sum of all divisors σ(n): 196602126480
• Sum of proper divisors (its aliquot sum) s(n): 124181813840
• 72420312640 is an abundant number, because the sum of its proper divisors (124181813840) is greater than itself. Its abundance is 51761501200

Bases of 72420312640

• Binary: 1000011011100100101100100011001000000₂
• Hexadecimal: 0x10DC964640
• Base-36: X9P6MV4

Squares and roots of 72420312640

• 72420312640 squared (72420312640²) is 5244701682875343769600
• 72420312640 cubed (72420312640³) is 379822935577366529941908127744000
• The square root of 72420312640 is 269110.2239603691
• The cube root of 72420312640 is 4168.2471808637

Scales and comparisons

• 72,420,312,640 seconds is equal to 2,302 years, 38 weeks, 4 days, 1 hour, 30 minutes, 40 seconds.
• To count from 1 to 72,420,312,640 would take you about four thousand, six hundred five 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 72420312640 cubic inches would be around 347.4 feet tall.

Recreational maths with 72420312640

• 72420312640 backwards is 04621302427
• The number of decimal digits it has is: 11
• The sum of 72420312640's digits is 31
• More coming soon!