81438414840
81,438,414,840 is an even composite number composed of seven prime numbers multiplied together.
81438414840 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 81438414840:
23 × 32 × 5 × 19 × 31 × 433 × 887
(2 × 2 × 2 × 3 × 3 × 5 × 19 × 31 × 433 × 887)See below for interesting mathematical facts about the number 81438414840 from the Numbermatics database.
Names of 81438414840
- Cardinal: 81438414840 can be written as Eighty-one billion, four hundred thirty-eight million, four hundred fourteen thousand, eight hundred forty.
Scientific notation
- Scientific notation: 8.143841484 × 1010
Factors of 81438414840
Divisors of 81438414840
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 30 31 36 38 40 45 57 60 62 72 76 90 93 95 114 120 124 152 155 171 180 186 190 228 248 279 285 310 342 360 372 380 433 456 465 558 570 589 620 684 744 760 855 866 887 930 1116 1140 1178 1240 1299 1368 1395 1710 1732 1767 1774 1860 2165 2232 2280 2356 2598 2661 2790 2945 3420 3464 3534 3548 3720 3897 4330 4435 4712 5196 5301 5322 5580 5890 6495 6840 7068 7096 7794 7983 8227 8660 8835 8870 10392 10602 10644 11160 11780 12990 13305 13423 14136 15588 15966 16454 16853 17320 17670 17740 19485 21204 21288 23560 24681 25980 26505 26610 26846 27497 31176 31932 32908 33706 35340 35480 38970 39915 40269 41135 42408 49362 50559 51960 53010 53220 53692 54994 63864 65816 67115 67412 70680 74043 77940 79830 80538 82270 82491 84265 98724 101118 106020 106440 107384 109988 120807 123405 134230 134824 137485 148086 151677 155880 159660 161076 164540 164982 168530 197448 201345 202236 212040 219976 241614 246810 247473 252795 255037 268460 274970 296172 303354 319320 322152 329080 329964 337060 370215 384071 402690 404472 412455 483228 493620 494946 505590 510074 522443 536920 549940 592344 604035 606708 659928 674120 740430 758385 765111 768142 805380 824910 966456 987240 989892 1011180 1020148 1044886 1099880 1152213 1208070 1213416 1237365 1275185 1480860 1516770 1530222 1536284 1567329 1610760 1649820 1920355 1979784 2022360 2040296 2089772 2295333 2304426 2416140 2474730 2550370 2612215 2961720 3033540 3060444 3072568 3134658 3299640 3456639 3825555 3840710 4179544 4590666 4608852 4701987 4832280 4949460 5100740 5224430 5761065 6067080 6120888 6269316 6913278 7297349 7651110 7681420 7836645 9181332 9217704 9403974 9898920 10201480 10448860 11476665 11522130 11906201 12538632 13826556 14594698 15302220 15362840 15673290 17283195 18362664 18807948 20897720 21892047 22953330 23044260 23509935 23812402 27653112 29189396 30604440 31346580 34566390 35718603 36486745 37615896 43784094 45906660 46088520 47019870 47624804 58378792 59531005 62693160 65676141 69132780 71437206 72973490 87568188 91813320 94039740 95249608 107155809 109460235 119062010 131352282 138265560 142874412 145946980 175136376 178593015 188079480 214311618 218920470 226217819 238124020 262704564 285748824 291893960 328380705 357186030 428623236 437840940 452435638 476248040 525409128 535779045 656761410 678653457 714372060 857246472 875681880 904871276 1071558090 1131089095 1313522820 1357306914 1428744120 1809742552 2035960371 2143116180 2262178190 2627045640 2714613828 3393267285 4071920742 4286232360 4524356380 5429227656 6786534570 8143841484 9048712760 10179801855 13573069140 16287682968 20359603710 27146138280 40719207420 81438414840
- Sum of all divisors σ(n): 288581529600
- Sum of proper divisors (its aliquot sum) s(n): 207143114760
- 81438414840 is an abundant number, because the sum of its proper divisors (207143114760) is greater than itself. Its abundance is 125704699920
Bases of 81438414840
- Binary: 10010111101100001101110010111111110002
- Hexadecimal: 0x12F61B97F8
- Base-36: 11EUBV20
Squares and roots of 81438414840
- 81438414840 squared (814384148402) is 6632215411651932225600
- 81438414840 cubed (814384148403) is 540117110002351426275977267904000
-
The
square root of 81438414840 is 285374.1663851163 -
The
cube root of 81438414840 is 4334.5408867911
Scales and comparisons
How big is 81438414840?- 81,438,414,840 seconds is equal to 2,589 years, 25 weeks, 3 days, 5 hours, 54 minutes.
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To count from 1 to 81,438,414,840 would take you about five thousand, one hundred seventy-eight 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 81438414840 cubic inches would be around 361.2 feet tall.
Recreational maths with 81438414840
- 81438414840 backwards is 04841483418
- 81438414840 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81438414840's digits is 45
- More coming soon!
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The information we have on file for 81438414840 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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