21157383240
21,157,383,240 is an even composite number composed of seven prime numbers multiplied together.
21157383240 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 21157383240:
23 × 32 × 5 × 7 × 113 × 191 × 389
(2 × 2 × 2 × 3 × 3 × 5 × 7 × 113 × 191 × 389)See below for interesting mathematical facts about the number 21157383240 from the Numbermatics database.
Names of 21157383240
- Cardinal: 21157383240 can be written as Twenty-one billion, one hundred fifty-seven million, three hundred eighty-three thousand, two hundred forty.
Scientific notation
- Scientific notation: 2.115738324 × 1010
Factors of 21157383240
Divisors of 21157383240
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 30 35 36 40 42 45 56 60 63 70 72 84 90 105 113 120 126 140 168 180 191 210 226 252 280 315 339 360 382 389 420 452 504 565 573 630 678 764 778 791 840 904 955 1017 1130 1146 1167 1260 1337 1356 1528 1556 1582 1695 1719 1910 1945 2034 2260 2292 2334 2373 2520 2674 2712 2723 2865 3112 3164 3390 3438 3501 3820 3890 3955 4011 4068 4520 4584 4668 4746 5085 5348 5446 5730 5835 6328 6685 6780 6876 7002 7119 7640 7780 7910 8022 8136 8169 8595 9336 9492 10170 10696 10892 11460 11670 11865 12033 13370 13560 13615 13752 14004 14238 15560 15820 16044 16338 17190 17505 18984 20055 20340 21583 21784 22920 23340 23730 24066 24507 26740 27230 28008 28476 31640 32088 32676 34380 35010 35595 40110 40680 40845 43166 43957 46680 47460 48132 49014 53480 54460 56952 60165 64749 65352 68760 70020 71190 74299 80220 81690 86332 87914 94920 96264 98028 107915 108920 120330 122535 129498 131871 140040 142380 148598 151081 160440 163380 172664 175828 194247 196056 215830 219785 222897 240660 245070 258996 263742 284760 297196 302162 307699 323745 326760 351656 371495 388494 395613 431660 439570 445794 453243 481320 490140 517992 520093 527484 594392 604324 615398 647490 659355 668691 742990 755405 776988 791226 863320 879140 891588 906486 923097 971235 980280 1040186 1054968 1114485 1208648 1230796 1294980 1318710 1337382 1359729 1485980 1510810 1538495 1553976 1560279 1582452 1758280 1783176 1812972 1846194 1942470 1978065 2080372 2228970 2266215 2461592 2589960 2600465 2637420 2674764 2719458 2769291 2971960 3021620 3076990 3120558 3164904 3343455 3625944 3692388 3884940 3956130 4160744 4457940 4532430 4615485 4680837 5200930 5274840 5349528 5438916 5538582 6043240 6153980 6241116 6686910 6798645 7384776 7769880 7801395 7912260 8395787 8915880 9064860 9230970 9361674 10401860 10877832 11077164 12307960 12482232 13373820 13597290 13846455 15602790 15824520 16791574 18129720 18461940 18723348 20803720 22154328 23404185 25187361 26747640 27194580 27692910 31205580 33583148 36923880 37446696 41978935 46808370 50374722 54389160 55385820 58770509 62411160 67166296 75562083 83957870 93616740 100749444 110771640 117541018 125936805 151124166 167915740 176311527 187233480 201498888 235082036 251873610 293852545 302248332 335831480 352623054 377810415 470164072 503747220 528934581 587705090 604496664 705246108 755620830 881557635 1007494440 1057869162 1175410180 1410492216 1511241660 1763115270 2115738324 2350820360 2644672905 3022483320 3526230540 4231476648 5289345810 7052461080 10578691620 21157383240
- Sum of all divisors σ(n): 79899955200
- Sum of proper divisors (its aliquot sum) s(n): 58742571960
- 21157383240 is an abundant number, because the sum of its proper divisors (58742571960) is greater than itself. Its abundance is 37585188720
Bases of 21157383240
- Binary: 100111011010001010000001100010010002
- Hexadecimal: 0x4ED140C48
- Base-36: 9PWK5E0
Squares and roots of 21157383240
- 21157383240 squared (211573832402) is 447634865564232897600
- 21157383240 cubed (211573832403) is 9470782402328354251138876224000
-
The
square root of 21157383240 is 145455.7776095539 -
The
cube root of 21157383240 is 2765.7992272275
Scales and comparisons
How big is 21157383240?- 21,157,383,240 seconds is equal to 672 years, 38 weeks, 3 days, 2 hours, 54 minutes.
-
To count from 1 to 21,157,383,240 would take you about one thousand, three hundred forty-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 21157383240 cubic inches would be around 230.5 feet tall.
Recreational maths with 21157383240
- 21157383240 backwards is 04238375112
- 21157383240 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21157383240's digits is 36
- More coming soon!
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