21228406290

Names of 21228406290

• Cardinal: 21228406290 can be written as Twenty-one billion, two hundred twenty-eight million, four hundred six thousand, two hundred ninety.

Scientific notation

• Scientific notation: 2.122840629 × 10¹⁰

Factors of 21228406290

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 9990

Divisors of 21228406290

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 5 6 7 9 10 13 14 15 18 21 26 27 29 30 35 39 42 45 54 58 63 65 70 78 81 87 90 91 105 117 126 130 135 145 162 174 182 189 195 203 210 234 261 270 273 290 315 351 377 378 390 405 406 435 455 522 546 567 585 609 630 702 754 783 810 819 870 910 945 1015 1053 1131 1134 1170 1218 1305 1365 1566 1638 1755 1827 1885 1890 2030 2106 2262 2349 2457 2610 2639 2730 2835 3045 3393 3510 3654 3770 3915 4095 4698 4914 5265 5278 5481 5655 5670 6090 6786 7371 7830 7917 8190 9135 9931 10179 10530 10962 11310 11745 12285 13195 14742 15834 16443 16965 18270 19862 20358 23490 23751 24570 26390 27405 29793 30537 32886 33930 36855 39585 47502 49655 50895 54810 59586 61074 69517 71253 73710 79170 82215 89379 99310 101790 118755 129103 139034 142506 148965 152685 164430 178758 208551 213759 237510 258206 268137 287999 297930 305370 347585 356265 387309 417102 427518 446895 536274 575998 625653 645515 695170 712530 774618 804411 863997 893790 903721 1042755 1068795 1161927 1251306 1291030 1340685 1439995 1608822 1727994 1807442 1876959 1936545 2015993 2085510 2137590 2323854 2591991 2681370 2711163 2879990 3128265 3485781 3743987 3753918 3873090 4022055 4031986 4319985 4518605 5183982 5422326 5630877 5809635 6047979 6256530 6971562 7487974 7775973 8044110 8133489 8639970 9037210 9384795 10079965 10457343 11231961 11261754 11619270 12095958 12959955 13555815 15551946 16266978 17428905 18143937 18719935 18769590 20159930 20914686 22463922 23327919 24400467 25919910 26207909 27111630 28154385 30239895 33695883 34857810 36287874 37439870 38879865 40667445 46655838 48800934 52286715 52415818 54431811 56159805 56308770 60479790 67391766 73201401 77759730 78623727 81334890 90719685 101087649 104573430 108863622 112319610 116639595 122002335 131039545 146402802 157247454 163295433 168479415 181439370 202175298 233279190 235871181 244004670 262079090 272159055 303262947 326590866 336958830 366007005 393118635 471742362 505438245 544318110 606525894 707613543 732014010 786237270 816477165 1010876490 1179355905 1415227086 1516314735 1632954330 2122840629 2358711810 3032629470 3538067715 4245681258 7076135430 10614203145 21228406290
• Sum of all divisors σ(n): 72683170560
• Sum of proper divisors (its aliquot sum) s(n): 51454764270
• 21228406290 is an abundant number, because the sum of its proper divisors (51454764270) is greater than itself. Its abundance is 30226357980

Bases of 21228406290

• Binary: 10011110001010011111100011000010010₂
• Hexadecimal: 0x4F14FC612
• Base-36: 9R2UF4I

Squares and roots of 21228406290

• 21228406290 squared (21228406290²) is 450645233613311564100
• 21228406290 cubed (21228406290³) is 9566480111795342635070178189000
• The square root of 21228406290 is 145699.7127313571
• The cube root of 21228406290 is 2768.8906004113

Scales and comparisons

• 21,228,406,290 seconds is equal to 674 years, 51 weeks, 6 days, 3 hours, 31 minutes, 30 seconds.
• To count from 1 to 21,228,406,290 would take you about one thousand, three hundred forty-nine 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 21228406290 cubic inches would be around 230.7 feet tall.

Recreational maths with 21228406290

• 21228406290 backwards is 09260482212
• The number of decimal digits it has is: 11
• The sum of 21228406290's digits is 36
• More coming soon!