28381636920

Names of 28381636920

• Cardinal: 28381636920 can be written as Twenty-eight billion, three hundred eighty-one million, six hundred thirty-six thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.838163692 × 10¹⁰

Factors of 28381636920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 30

Divisors of 28381636920

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 13 14 15 20 21 24 26 28 30 35 39 40 42 49 52 56 60 65 70 78 84 91 98 104 105 120 130 140 147 156 168 169 182 195 196 210 245 260 273 280 294 312 338 364 390 392 420 455 490 507 520 546 588 637 676 728 735 780 840 845 910 980 1014 1092 1176 1183 1274 1352 1365 1470 1560 1690 1820 1911 1960 2028 2184 2197 2366 2535 2548 2730 2940 3185 3380 3549 3640 3822 4056 4394 4732 5070 5096 5460 5880 5915 6370 6591 6760 7098 7644 8281 8788 9464 9555 10140 10920 10985 11830 12740 13182 14196 15288 15379 16562 17576 17745 19110 20280 21970 23660 24843 25480 26364 28392 28561 30758 32955 33124 35490 38220 41405 43940 46137 47320 49686 52728 57122 61516 65910 66248 70980 76440 76895 82810 85683 87880 92274 99372 107653 114244 123032 124215 131820 141960 142805 153790 165620 171366 184548 198744 199927 215306 228488 230685 248430 263640 285610 307580 322959 331240 342732 369096 371293 399854 428415 430612 461370 496860 538265 571220 599781 615160 645918 685464 742586 799708 856830 861224 922740 993720 999635 1076530 1113879 1142440 1199562 1291836 1399489 1485172 1599416 1614795 1713660 1845480 1856465 1999270 2153060 2227758 2399124 2583672 2599051 2798978 2970344 2998905 3229590 3427320 3712930 3998540 4198467 4306120 4455516 4798248 4826809 5198102 5569395 5597956 5997810 6459180 6997445 7425860 7797153 7997080 8396934 8911032 9653618 10396204 11138790 11195912 11995620 12918360 12995255 13994890 14480427 14851720 15594306 16793868 18193357 19307236 20792408 20992335 22277580 23991240 24134045 25990510 27989780 28960854 31188612 33587736 33787663 36386714 38614472 38985765 41984670 44555160 48268090 51981020 54580071 55979560 57921708 62377224 67575326 72402135 72773428 77971530 83969340 90966785 96536180 101362989 103962040 109160142 115843416 135150652 144804270 145546856 155943060 167938680 168938315 181933570 193072360 202725978 218320284 236513641 270301304 272900355 289608540 311886120 337876630 363867140 405451956 436640568 473027282 506814945 545800710 579217080 675753260 709540923 727734280 810903912 946054564 1013629890 1091601420 1182568205 1351506520 1419081846 1892109128 2027259780 2183202840 2365136410 2838163692 3547704615 4054519560 4730272820 5676327384 7095409230 9460545640 14190818460 28381636920
• Sum of all divisors σ(n): 107299962360
• Sum of proper divisors (its aliquot sum) s(n): 78918325440
• 28381636920 is an abundant number, because the sum of its proper divisors (78918325440) is greater than itself. Its abundance is 50536688520

Bases of 28381636920

• Binary: 11010011011101011010110100100111000₂
• Hexadecimal: 0x69BAD6938
• Base-36: D1DOZ7C

Squares and roots of 28381636920

• 28381636920 squared (28381636920²) is 805517314258707086400
• 28381636920 cubed (28381636920³) is 22861899946064163474835869888000
• The square root of 28381636920 is 168468.5042374389
• The cube root of 28381636920 is 3050.3228868951
• Being both a perfect square and a perfect cube, 28381636920 is also a perfect sixth number.

Scales and comparisons

• 28,381,636,920 seconds is equal to 902 years, 23 weeks, 2 days, 4 hours, 2 minutes.
• To count from 1 to 28,381,636,920 would take you about one thousand, eight hundred four 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 28381636920 cubic inches would be around 254.2 feet tall.

Recreational maths with 28381636920

• 28381636920 backwards is 02963618382
• The number of decimal digits it has is: 11
• The sum of 28381636920's digits is 48
• More coming soon!