28909408640

Names of 28909408640

• Cardinal: 28909408640 can be written as Twenty-eight billion, nine hundred nine million, four hundred eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.890940864 × 10¹⁰

Factors of 28909408640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 7716

Divisors of 28909408640

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 29 32 35 40 56 58 64 70 80 112 116 128 140 145 160 203 224 232 280 290 320 406 448 464 560 580 640 812 841 896 928 1015 1120 1160 1624 1682 1856 2030 2240 2320 3248 3364 3712 4060 4205 4480 4640 5887 6496 6728 7673 8120 8410 9280 11774 12992 13456 15346 16240 16820 18560 23548 25984 26912 29435 30692 32480 33640 38365 47096 53711 53824 58870 61384 64960 67280 76730 94192 107422 107648 117740 122768 129920 134560 153460 188384 214844 222517 235480 245536 268555 269120 306920 376768 429688 445034 470960 491072 537110 538240 613840 753536 859376 890068 941920 982144 1074220 1112585 1227680 1557619 1718752 1780136 1883840 2148440 2225170 2455360 3115238 3437504 3560272 3767680 4296880 4450340 4910720 6230476 6452993 6875008 7120544 7788095 8593760 8900680 12460952 12905986 14241088 15576190 17187520 17801360 24921904 25811972 28482176 31152380 32264965 34375040 35602720 45170951 49843808 51623944 62304760 64529930 71205440 90341902 99687616 103247888 124609520 129059860 142410880 180683804 199375232 206495776 225854755 249219040 258119720 361367608 412991552 451709510 498438080 516239440 722735216 825983104 903419020 996876160 1032478880 1445470432 1806838040 2064957760 2890940864 3613676080 4129915520 5781881728 7227352160 14454704320 28909408640
• Sum of all divisors σ(n): 81812820960
• Sum of proper divisors (its aliquot sum) s(n): 52903412320
• 28909408640 is an abundant number, because the sum of its proper divisors (52903412320) is greater than itself. Its abundance is 23994003680

Bases of 28909408640

• Binary: 11010111011001000101001000110000000₂
• Hexadecimal: 0x6BB229180
• Base-36: DA3WYGW

Squares and roots of 28909408640

• 28909408640 squared (28909408640²) is 835753907914506649600
• 28909408640 cubed (28909408640³) is 24161151246377402917283692544000
• The square root of 28909408640 is 170027.6702187029
• The cube root of 28909408640 is 3069.1143466257

Scales and comparisons

• 28,909,408,640 seconds is equal to 919 years, 11 weeks, 6 days, 15 hours, 17 minutes, 20 seconds.
• To count from 1 to 28,909,408,640 would take you about one thousand, eight hundred thirty-eight 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 28909408640 cubic inches would be around 255.8 feet tall.

Recreational maths with 28909408640

• 28909408640 backwards is 04680490982
• The number of decimal digits it has is: 11
• The sum of 28909408640's digits is 50
• More coming soon!