21981998220

Names of 21981998220

• Cardinal: 21981998220 can be written as Twenty-one billion, nine hundred eighty-one million, nine hundred ninety-eight thousand, two hundred twenty.

Scientific notation

• Scientific notation: 2.198199822 × 10¹⁰

Factors of 21981998220

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 767

Divisors of 21981998220

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 13 14 15 20 21 26 28 30 35 37 39 42 52 60 65 70 74 78 84 91 105 111 130 140 148 156 182 185 195 210 222 233 259 260 273 364 370 390 420 444 455 466 467 481 518 546 555 699 740 777 780 910 932 934 962 1036 1092 1110 1165 1295 1365 1398 1401 1443 1554 1631 1820 1868 1924 2220 2330 2335 2405 2590 2730 2796 2802 2886 3029 3108 3262 3269 3367 3495 3885 4660 4670 4810 4893 5180 5460 5604 5772 6058 6071 6524 6538 6734 6990 7005 7215 7770 8155 8621 9087 9340 9620 9786 9807 10101 12116 12142 13076 13468 13980 14010 14430 15145 15540 16310 16345 16835 17242 17279 18174 18213 19572 19614 20202 21203 24284 24465 25863 28020 28860 30290 30355 32620 32690 33670 34484 34558 36348 36426 39228 40404 42406 42497 43105 45435 48930 49035 50505 51726 51837 60347 60580 60710 63609 65380 67340 69116 72852 84812 84994 86210 86395 90870 91065 97860 98070 101010 103452 103674 106015 108811 112073 120694 120953 121420 127218 127491 129315 169988 172420 172790 181041 181740 182130 196140 202020 207348 212030 212485 217622 224146 224627 241388 241906 254436 254982 258630 259185 301735 318045 326433 336219 345580 362082 362859 364260 424060 424970 435244 448292 449254 483812 509964 517260 518370 544055 560365 603470 604765 636090 637455 652866 672438 673881 724164 725718 761677 784511 849940 898508 905205 1036740 1088110 1120730 1123135 1206940 1209530 1272180 1274910 1305732 1344876 1347762 1414543 1451436 1523354 1569022 1572389 1632165 1681095 1810410 1814295 2176220 2241460 2246270 2285031 2353533 2419060 2549820 2695524 2829086 3046708 3138044 3144778 3264330 3362190 3369405 3620820 3628590 3808385 3922555 4026007 4243629 4492540 4570062 4707066 4717167 5658172 6289556 6528660 6724380 6738810 7072715 7257180 7616770 7845110 7861945 8052014 8487258 9140124 9414132 9434334 9901801 11425155 11767665 12078021 13477620 14145430 15233540 15690220 15723890 16104028 16974516 18868668 19803602 20130035 21218145 22850310 23535330 23585835 24156042 28182049 28290860 29705403 31447780 39607204 40260070 42436290 45700620 47070660 47171670 48312084 49509005 52338091 56364098 59410806 60390105 80520140 84546147 84872580 94343340 99018010 104676182 112728196 118821612 120780210 140910245 148527015 157014273 169092294 198036020 209352364 241560420 261690455 281820490 297054030 314028546 338184588 366366637 422730735 523380910 563640980 594108060 628057092 732733274 785071365 845461470 1046761820 1099099911 1465466548 1570142730 1690922940 1831833185 2198199822 3140285460 3663666370 4396399644 5495499555 7327332740 10990999110 21981998220
• Sum of all divisors σ(n): 78301956096
• Sum of proper divisors (its aliquot sum) s(n): 56319957876
• 21981998220 is an abundant number, because the sum of its proper divisors (56319957876) is greater than itself. Its abundance is 34337959656

Bases of 21981998220

• Binary: 10100011110001110101010110010001100₂
• Hexadecimal: 0x51E3AAC8C
• Base-36: A3JIIDO

Squares and roots of 21981998220

• 21981998220 squared (21981998220²) is 483208245744083168400
• 21981998220 cubed (21981998220³) is 10621882797835758783300760248000
• The square root of 21981998220 is 148263.2733349699
• The cube root of 21981998220 is 2801.2748539883

Scales and comparisons

• 21,981,998,220 seconds is equal to 698 years, 49 weeks, 6 days, 6 hours, 37 minutes.
• To count from 1 to 21,981,998,220 would take you about one thousand, three hundred ninety-seven 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 21981998220 cubic inches would be around 233.4 feet tall.

Recreational maths with 21981998220

• 21981998220 backwards is 02289918912
• The number of decimal digits it has is: 11
• The sum of 21981998220's digits is 51
• More coming soon!