20921099472

Names of 20921099472

• Cardinal: 20921099472 can be written as Twenty billion, nine hundred twenty-one million, ninety-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.0921099472 × 10¹⁰

Factors of 20921099472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 139

Divisors of 20921099472

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 27 28 36 39 42 47 48 52 54 56 63 67 72 78 84 91 94 104 108 112 117 126 134 141 144 156 168 169 182 188 189 201 208 216 234 252 268 273 282 312 329 336 338 351 364 376 378 402 423 432 468 469 504 507 536 546 564 603 611 624 658 676 702 728 752 756 804 819 846 871 936 938 987 1008 1014 1072 1092 1128 1183 1206 1222 1269 1316 1352 1404 1407 1456 1512 1521 1608 1638 1692 1742 1809 1833 1872 1876 1974 2028 2184 2197 2256 2366 2412 2444 2457 2538 2613 2632 2704 2808 2814 2961 3024 3042 3149 3216 3276 3384 3484 3549 3618 3666 3752 3948 4056 4221 4277 4368 4394 4563 4732 4824 4888 4914 5076 5226 5264 5499 5616 5628 5922 6084 6097 6298 6552 6591 6768 6968 7098 7236 7332 7504 7839 7896 7943 8112 8442 8554 8788 8883 9126 9447 9464 9648 9776 9828 10152 10452 10647 10998 11256 11323 11844 12168 12194 12596 12663 12831 13104 13182 13936 14196 14472 14664 15379 15678 15792 15886 16497 16884 17108 17576 17766 18252 18291 18894 18928 19656 19773 20304 20904 21294 21996 22043 22512 22646 23517 23688 23829 24336 24388 25192 25326 25662 26364 28341 28392 28944 29328 30758 31356 31772 31941 32994 33768 33969 34216 35152 35532 36504 36582 37788 38493 39312 39546 40937 41808 42588 43992 44086 45292 46137 47034 47376 47658 48776 50384 50652 51324 52728 54873 55601 56682 56784 59319 61516 62712 63544 63882 65988 66129 67536 67938 68432 71064 71487 73008 73164 75576 76986 79092 79261 81874 85023 85176 87984 88172 90584 92274 94068 95316 97552 101304 101907 102648 103259 105456 109746 111202 113364 115479 118638 122811 123032 125424 127088 127764 131976 132258 135876 138411 142128 142974 146328 147199 151152 153972 158184 158522 163748 164619 166803 170046 170352 176344 181168 184548 188136 190632 198387 202608 203814 205296 206518 214461 219492 222404 226728 230958 237276 237783 245622 246064 255528 263952 264516 271752 276822 285948 286559 292656 294398 305721 307944 309777 316368 317044 327496 329238 333606 340092 352688 368433 369096 376272 381264 396774 407628 413036 415233 428922 438984 441597 444808 453456 461916 474552 475566 491244 500409 511056 529032 532181 543504 553644 571896 573118 588796 595161 611442 615888 619554 634088 654992 658476 667212 680184 713349 722813 736866 738192 793548 815256 826072 830466 857844 859677 877968 883194 889616 923832 929331 949104 951132 982488 1000818 1030393 1058064 1064362 1105299 1107288 1143792 1146236 1177592 1190322 1222884 1239108 1268176 1316952 1324791 1334424 1360368 1426698 1445626 1473732 1501227 1587096 1596543 1630512 1652144 1660932 1715688 1719354 1766388 1847664 1858662 1902264 1964976 2001636 2060786 2128724 2140047 2168439 2210598 2214576 2292472 2355184 2380644 2445768 2478216 2579031 2633904 2649582 2668848 2787993 2853396 2891252 2947464 3002454 3091179 3174192 3193086 3321864 3431376 3438708 3532776 3717324 3725267 3804528 3974373 4003272 4121572 4257448 4280094 4336878 4421196 4584944 4761288 4789629 4891536 4956432 5158062 5299164 5575986 5706792 5782504 5894928 6004908 6182358 6386172 6505317 6643728 6877416 6918353 7065552 7434648 7450534 7737093 7948746 8006544 8243144 8514896 8560188 8673756 8842392 9273537 9522576 9579258 10316124 10598328 11151972 11175801 11413584 11565008 12009816 12364716 12772344 13010634 13754832 13836706 14368887 14869296 14901068 15474186 15897492 16486288 17120376 17347512 17684784 18547074 19158516 19515951 20632248 20755059 21196656 22303944 22351602 24019632 24729432 25544688 26021268 27673412 27820611 28737774 29802136 30948372 31794984 33527403 34240752 34695024 37094148 38317032 39031902 41264496 41510118 44607888 44703204 48428471 49458864 52042536 55346824 55641222 57475548 59604272 61896744 62265177 63589968 67054806 74188296 76634064 78063804 83020236 89406408 96856942 100582209 104085072 110693648 111282444 114951096 123793488 124530354 134109612 145285413 148376592 156127608 166040472 178812816 186795531 193713884 201164418 222564888 229902192 249060708 268219224 290570826 312255216 332080944 373591062 387427768 402328836 435856239 445129776 498121416 536438448 581141652 747182124 774855536 804657672 871712478 996242832 1162283304 1307568717 1494364248 1609315344 1743424956 2324566608 2615137434 2988728496 3486849912 5230274868 6973699824 10460549736 20921099472
• Sum of all divisors σ(n): 77061734400
• Sum of proper divisors (its aliquot sum) s(n): 56140634928
• 20921099472 is an abundant number, because the sum of its proper divisors (56140634928) is greater than itself. Its abundance is 35219535456

Bases of 20921099472

• Binary: 10011011110111111101010010011010000₂
• Hexadecimal: 0x4DEFEA4D0
• Base-36: 9LZVRO0

Squares and roots of 20921099472

• 20921099472 squared (20921099472²) is 437692403117318678784
• 20921099472 cubed (20921099472³) is 9157006303756146964763680002048
• The square root of 20921099472 is 144641.2785894817
• The cube root of 20921099472 is 2755.4645928013

Scales and comparisons

• 20,921,099,472 seconds is equal to 665 years, 11 weeks, 5 days, 8 hours, 31 minutes, 12 seconds.
• To count from 1 to 20,921,099,472 would take you about one thousand, three hundred thirty 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 20921099472 cubic inches would be around 229.6 feet tall.

Recreational maths with 20921099472

• 20921099472 backwards is 27499012902
• The number of decimal digits it has is: 11
• The sum of 20921099472's digits is 45
• More coming soon!