21439202928

Names of 21439202928

• Cardinal: 21439202928 can be written as Twenty-one billion, four hundred thirty-nine million, two hundred two thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1439202928 × 10¹⁰

Factors of 21439202928

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 946

Divisors of 21439202928

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 16 17 22 24 26 33 34 39 44 48 51 52 66 68 78 88 102 104 132 136 143 156 176 187 204 208 221 264 272 286 312 313 374 408 429 442 528 561 572 587 624 626 663 748 816 858 884 939 1122 1144 1174 1252 1326 1496 1716 1761 1768 1878 2244 2288 2348 2431 2504 2652 2992 3432 3443 3522 3536 3756 4069 4488 4696 4862 5008 5304 5321 6457 6864 6886 7044 7293 7512 7631 8138 8976 9392 9724 9979 10329 10608 10642 12207 12914 13772 14088 14586 15024 15262 15963 16276 19371 19448 19958 20658 21284 22893 24414 25828 27544 28176 29172 29937 30524 31926 32552 38742 38896 39916 41316 42568 44759 45786 48828 51656 55088 58344 58531 59874 61048 63852 65104 69173 77484 79832 82632 83941 85136 89518 91572 97656 103312 109769 116688 117062 119748 122096 127704 129727 134277 138346 154968 159664 165264 167882 175593 179036 183144 183731 195312 207519 219538 234124 239496 251823 255408 259454 268554 276692 309936 329307 335764 351186 358072 366288 367462 389181 415038 439076 468248 478992 503646 518908 537108 551193 553384 658614 671528 702372 716144 734924 760903 778362 830076 878152 936496 1007292 1037816 1074216 1102386 1106768 1317228 1343056 1404744 1426997 1469848 1521806 1556724 1660152 1756304 2014584 2021041 2075632 2148432 2204772 2282709 2388503 2634456 2809488 2853994 2939696 3043612 3113448 3123427 3320304 4029168 4042082 4280991 4409544 4565418 4777006 5268912 5707988 6063123 6087224 6226896 6246854 7165509 8084164 8561982 8819088 9130836 9370281 9554012 11415976 12126246 12174448 12493708 14331018 16168328 17123964 18261672 18740562 19108024 22831952 24252492 24987416 26273533 28662036 32336656 34247928 34357697 36523344 37481124 38216048 40604551 48504984 49974832 52547066 57324072 68495856 68715394 74962248 78820599 81209102 97009968 103073091 105094132 114648144 121813653 137430788 149924496 157641198 162418204 206146182 210188264 243627306 274861576 315282396 324836408 412292364 420376528 446650061 487254612 549723152 630564792 649672816 824584728 893300122 974509224 1261129584 1339950183 1649169456 1786600244 1949018448 2679900366 3573200488 5359800732 7146400976 10719601464 21439202928
• Sum of all divisors σ(n): 69232568832
• Sum of proper divisors (its aliquot sum) s(n): 47793365904
• 21439202928 is an abundant number, because the sum of its proper divisors (47793365904) is greater than itself. Its abundance is 26354162976

Bases of 21439202928

• Binary: 10011111101111000000100011001110000₂
• Hexadecimal: 0x4FDE04670
• Base-36: 9UKCIUO

Squares and roots of 21439202928

• 21439202928 squared (21439202928²) is 459639422187963773184
• 21439202928 cubed (21439202928³) is 9854302845996421092404340682752
• The square root of 21439202928 is 146421.3199230221
• The cube root of 21439202928 is 2778.0253962673

Scales and comparisons

• 21,439,202,928 seconds is equal to 681 years, 36 weeks, 2 days, 22 hours, 8 minutes, 48 seconds.
• To count from 1 to 21,439,202,928 would take you about one thousand, three hundred sixty-three 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 21439202928 cubic inches would be around 231.5 feet tall.

Recreational maths with 21439202928

• 21439202928 backwards is 82920293412
• The number of decimal digits it has is: 11
• The sum of 21439202928's digits is 42
• More coming soon!