21228446720

Names of 21228446720

• Cardinal: 21228446720 can be written as Twenty-one billion, two hundred twenty-eight million, four hundred forty-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.122844672 × 10¹⁰

Factors of 21228446720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 367

Divisors of 21228446720

• Number of divisors d(n): 352
• Complete list of divisors:
  1 2 4 5 8 10 13 16 17 20 26 32 34 40 52 64 65 68 73 80 85 104 128 130 136 146 160 170 208 221 256 257 260 272 292 320 340 365 416 442 512 514 520 544 584 640 680 730 832 884 949 1024 1028 1040 1088 1105 1168 1241 1280 1285 1360 1460 1664 1768 1898 2056 2080 2176 2210 2336 2482 2560 2570 2720 2920 3328 3341 3536 3796 4112 4160 4352 4369 4420 4672 4745 4964 5120 5140 5440 5840 6205 6656 6682 7072 7592 8224 8320 8704 8738 8840 9344 9490 9928 10280 10880 11680 12410 13312 13364 14144 15184 16133 16448 16640 16705 17408 17476 17680 18688 18761 18980 19856 20560 21760 21845 23360 24820 26728 28288 30368 32266 32896 33280 33410 34952 35360 37376 37522 37960 39712 41120 43520 43690 46720 49640 53456 56576 56797 60736 64532 65792 66560 66820 69904 70720 74752 75044 75920 79424 80665 82240 87040 87380 93440 93805 99280 106912 113152 113594 121472 129064 131584 133640 139808 141440 150088 151840 158848 161330 164480 174760 186880 187610 198560 213824 226304 227188 242944 243893 258128 263168 267280 279616 282880 283985 300176 303680 317696 318937 322660 328960 349520 373760 375220 397120 427648 454376 485888 487786 516256 534560 559232 565760 567970 600352 607360 635392 637874 645320 657920 699040 750440 794240 855296 908752 971776 975572 1032512 1069120 1118464 1131520 1135940 1200704 1214720 1219465 1270784 1275748 1290640 1315840 1398080 1500880 1588480 1594685 1710592 1817504 1951144 2065024 2138240 2236928 2271880 2401408 2429440 2438930 2551496 2581280 2796160 3001760 3176960 3189370 3421184 3635008 3902288 4130048 4146181 4276480 4473856 4543760 4802816 4858880 4877860 5102992 5162560 5592320 6003520 6353920 6378740 7270016 7804576 8260096 8292362 8552960 9087520 9605632 9755720 10205984 10325120 11184640 12007040 12757480 14540032 15609152 16520192 16584724 17105920 18175040 19211264 19511440 20411968 20650240 20730905 22369280 24014080 25514960 29080064 31218304 33169448 36350080 39022880 40823936 41300480 41461810 48028160 51029920 58160128 62436608 66338896 72700160 78045760 81647872 82600960 82923620 96056320 102059840 124873216 132677792 145400320 156091520 163295744 165847240 204119680 249746432 265355584 290800640 312183040 326591488 331694480 408239360 530711168 624366080 663388960 816478720 1061422336 1248732160 1326777920 1632957440 2122844672 2653555840 4245689344 5307111680 10614223360 21228446720
• Sum of all divisors σ(n): 59090961888
• Sum of proper divisors (its aliquot sum) s(n): 37862515168
• 21228446720 is an abundant number, because the sum of its proper divisors (37862515168) is greater than itself. Its abundance is 16634068448

Bases of 21228446720

• Binary: 10011110001010100000110010000000000₂
• Hexadecimal: 0x4F1506400
• Base-36: 9R2VABK

Squares and roots of 21228446720

• 21228446720 squared (21228446720²) is 450646950143878758400
• 21228446720 cubed (21228446720³) is 9566534770659826556834152448000
• The square root of 21228446720 is 145699.8514755589
• The cube root of 21228446720 is 2768.8923582159

Scales and comparisons

• 21,228,446,720 seconds is equal to 674 years, 51 weeks, 6 days, 14 hours, 45 minutes, 20 seconds.
• To count from 1 to 21,228,446,720 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 21228446720 cubic inches would be around 230.7 feet tall.

Recreational maths with 21228446720

• 21228446720 backwards is 02764482212
• The number of decimal digits it has is: 11
• The sum of 21228446720's digits is 38
• More coming soon!