21978390435840

Names of 21978390435840

• Cardinal: 21978390435840 can be written as Twenty-one trillion, nine hundred seventy-eight billion, three hundred ninety million, four hundred thirty-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.197839043584 × 10¹³

Factors of 21978390435840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 450

Divisors of 21978390435840

• Number of divisors d(n): 1728
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 30 31 32 36 37 38 40 45 48 57 60 62 64 72 74 76 80 90 93 95 96 111 114 120 124 128 144 148 152 155 160 171 180 185 186 190 192 222 228 240 248 256 279 285 288 296 304 310 320 333 342 353 360 370 372 380 384 444 456 465 480 496 512 555 558 570 576 589 592 608 620 640 666 684 703 706 720 740 744 760 768 855 888 912 930 960 961 992 1024 1059 1110 1116 1140 1147 1152 1178 1184 1216 1240 1280 1332 1368 1395 1406 1412 1440 1480 1488 1520 1536 1665 1710 1765 1767 1776 1824 1860 1920 1922 1984 2048 2109 2118 2220 2232 2280 2294 2304 2356 2368 2432 2480 2560 2664 2736 2790 2812 2824 2880 2883 2945 2960 2976 3040 3072 3177 3330 3420 3441 3515 3530 3534 3552 3648 3720 3840 3844 3968 4218 4236 4440 4464 4560 4588 4608 4712 4736 4805 4864 4960 5120 5295 5301 5328 5472 5580 5624 5648 5735 5760 5766 5890 5920 5952 6080 6144 6327 6354 6660 6707 6840 6882 7030 7060 7068 7104 7296 7440 7680 7688 7936 8436 8472 8649 8835 8880 8928 9120 9176 9216 9424 9472 9610 9728 9920 10240 10323 10545 10590 10602 10656 10943 10944 11160 11248 11296 11470 11520 11532 11780 11840 11904 12160 12654 12708 13061 13320 13414 13680 13764 14060 14120 14136 14208 14415 14592 14880 15360 15376 15872 15885 16872 16944 17205 17298 17670 17760 17856 18240 18259 18352 18432 18848 18944 19220 19456 19840 20121 20646 21090 21180 21204 21312 21793 21886 21888 22320 22496 22592 22940 23040 23064 23560 23680 23808 24320 25308 25416 26122 26505 26640 26828 27360 27528 28120 28240 28272 28416 28830 29184 29760 30720 30752 31635 31744 31770 32829 33535 33744 33888 34410 34596 35340 35520 35557 35712 36480 36518 36704 37696 37888 38440 38912 39183 39680 40242 41292 42180 42360 42408 42624 43245 43586 43772 43776 44640 44992 45184 45880 46080 46128 47120 47360 47616 48640 50616 50832 51615 52244 53010 53280 53656 54715 54720 54777 55056 56240 56480 56544 56832 57660 58368 59520 60363 61504 63270 63488 63540 65305 65379 65658 67070 67488 67776 68820 69192 70680 71040 71114 71424 72960 73036 73408 75392 75776 76880 78366 79360 80484 82584 84360 84720 84816 85248 86490 87172 87544 87552 89280 89984 90368 91295 91760 92160 92256 94240 94720 95232 97280 98487 100605 101232 101664 103230 104488 106020 106560 106671 107312 108965 109430 109440 109554 110112 112480 112960 113088 113664 115320 116736 117549 119040 120726 123008 126540 127080 130610 130758 131316 134140 134976 135552 137640 138384 141360 142080 142228 142848 145920 146072 146816 150784 153760 156732 158720 160968 164145 164331 165168 168720 169440 169632 170496 172980 174344 175088 175104 177785 178560 179968 180736 182590 183520 184512 188480 189440 190464 194560 195915 196137 196974 201210 202464 203328 206460 207917 208976 212040 213120 213342 214624 217930 218860 218880 219108 220224 224960 225920 226176 227328 230640 235098 238080 241452 246016 248159 253080 254160 261220 261516 262632 268280 269952 271104 273885 275280 276768 282720 284160 284456 285696 291840 292144 293632 301568 301815 307520 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32132149760 33000586240 34341235056 35449016832 36148668480 37125659520 37314754560 38156927840 38558579712 39387796480 39600703488 42926543820 44311271040 45788313408 47265355776 48198224640 49500879360 57235391760 57837869568 59081694720 59401055232 61051084544 62261729280 64264299520 66001172480 68682470112 70898033664 72297336960 74251319040 76313855680 77117159424 78775592960 85853087640 88622542080 91576626816 96396449280 99001758720 114470783520 115675739136 118163389440 118802110464 122102169088 128528599040 137364940224 141796067328 144594673920 148502638080 152627711360 171706175280 177245084160 183153253632 192792898560 198003517440 228941567040 231351478272 236326778880 244204338176 274729880448 289189347840 297005276160 305255422720 343412350560 354490168320 366306507264 385585797120 457883134080 488408676352 549459760896 578378695680 594010552320 610510845440 686824701120 708980336640 732613014528 915766268160 1098919521792 1156757391360 1221021690880 1373649402240 1465226029056 1831532536320 2197839043584 2442043381760 2747298804480 3663065072640 4395678087168 5494597608960 7326130145280 10989195217920 21978390435840
• Sum of all divisors σ(n): 85332527935200
• Sum of proper divisors (its aliquot sum) s(n): 63354137499360
• 21978390435840 is an abundant number, because the sum of its proper divisors (63354137499360) is greater than itself. Its abundance is 41375747063520

Bases of 21978390435840

• Binary: 100111111110100111110001001111001100000000000₂
• Hexadecimal: 0x13FD3E279800
• Base-36: 7SGQE77K0

Squares and roots of 21978390435840

• 21978390435840 squared (21978390435840²) is 483049646150223185156505600
• 21978390435840 cubed (21978390435840³) is 10616653722983961528525164132595400704000
• The square root of 21978390435840 is 4688111.6065895871
• The cube root of 21978390435840 is 28011.2159300485

Scales and comparisons

• 21,978,390,435,840 seconds is equal to 698,844 years, 43 weeks, 1 day, 22 hours, 24 minutes.
• To count from 1 to 21,978,390,435,840 would take you about one million, seven hundred forty-seven thousand, one hundred twelve 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 21978390435840 cubic inches would be around 2334.3 feet tall.

Recreational maths with 21978390435840

• 21978390435840 backwards is 04853409387912
• The number of decimal digits it has is: 14
• The sum of 21978390435840's digits is 63
• More coming soon!