81372001680
81,372,001,680 is an even composite number composed of six prime numbers multiplied together.
81372001680 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 81372001680:
24 × 33 × 5 × 31 × 653 × 1861
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 31 × 653 × 1861)See below for interesting mathematical facts about the number 81372001680 from the Numbermatics database.
Names of 81372001680
- Cardinal: 81372001680 can be written as Eighty-one billion, three hundred seventy-two million, one thousand, six hundred eighty.
Scientific notation
- Scientific notation: 8.137200168 × 1010
Factors of 81372001680
Divisors of 81372001680
- Number of divisors d(n): 320
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 31 36 40 45 48 54 60 62 72 80 90 93 108 120 124 135 144 155 180 186 216 240 248 270 279 310 360 372 432 465 496 540 558 620 653 720 744 837 930 1080 1116 1240 1306 1395 1488 1674 1860 1861 1959 2160 2232 2480 2612 2790 3265 3348 3720 3722 3918 4185 4464 5224 5580 5583 5877 6530 6696 7440 7444 7836 8370 9305 9795 10448 11160 11166 11754 13060 13392 14888 15672 16740 16749 17631 18610 19590 20243 22320 22332 23508 26120 27915 29385 29776 31344 33480 33498 35262 37220 39180 40486 44664 47016 50247 52240 55830 57691 58770 60729 66960 66996 70524 74440 78360 80972 83745 88155 89328 94032 100494 101215 111660 115382 117540 121458 133992 141048 148880 156720 161944 167490 173073 176310 182187 200988 202430 223320 230764 235080 242916 251235 267984 282096 288455 303645 323888 334980 346146 352620 364374 401976 404860 446640 461528 470160 485832 502470 519219 546561 576910 607290 669960 692292 705240 728748 803952 809720 865365 910935 923056 971664 1004940 1038438 1093122 1153820 1214580 1215233 1339920 1384584 1410480 1457496 1557657 1619440 1730730 1821870 2009880 2076876 2186244 2307640 2429160 2430466 2596095 2732805 2769168 2914992 3115314 3461460 3643740 3645699 4019760 4153752 4372488 4615280 4858320 4860932 5192190 5465610 6076165 6230628 6922920 7287480 7291398 7788285 8307504 8744976 9721864 10384380 10931220 10937097 12152330 12461256 13845840 14574960 14582796 15576570 18228495 19443728 20768760 21862440 21874194 24304660 24922512 29165592 31153140 32811291 36456990 37672223 41537520 43724880 43748388 48609320 54685485 58331184 62306280 65622582 72913980 75344446 87496776 97218640 109370970 113016669 124612560 131245164 145827960 150688892 164056455 174993552 188361115 218741940 226033338 262490328 291655920 301377784 328112910 339050007 376722230 437483880 452066676 524980656 565083345 602755568 656225820 678100014 753444460 874967760 904133352 1017150021 1130166690 1312451640 1356200028 1506888920 1695250035 1808266704 2034300042 2260333380 2624903280 2712400056 3013777840 3390500070 4068600084 4520666760 5085750105 5424800112 6781000140 8137200168 9041333520 10171500210 13562000280 16274400336 20343000420 27124000560 40686000840 81372001680
- Sum of all divisors σ(n): 289921443840
- Sum of proper divisors (its aliquot sum) s(n): 208549442160
- 81372001680 is an abundant number, because the sum of its proper divisors (208549442160) is greater than itself. Its abundance is 127177440480
Bases of 81372001680
- Binary: 10010111100100010011000110101100100002
- Hexadecimal: 0x12F2263590
- Base-36: 11DQSEC0
Squares and roots of 81372001680
- 81372001680 squared (813720016802) is 6621402657409922822400
- 81372001680 cubed (813720016803) is 538796788162716704353003141632000
-
The
square root of 81372001680 is 285257.7811033381 -
The
cube root of 81372001680 is 4333.3622912989
Scales and comparisons
How big is 81372001680?- 81,372,001,680 seconds is equal to 2,587 years, 19 weeks, 4 days, 13 hours, 48 minutes.
-
To count from 1 to 81,372,001,680 would take you about five thousand, one hundred seventy-four 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 81372001680 cubic inches would be around 361.1 feet tall.
Recreational maths with 81372001680
- 81372001680 backwards is 08610027318
- 81372001680 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81372001680's digits is 36
- More coming soon!
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