28991699218720

Names of 28991699218720

• Cardinal: 28991699218720 can be written as Twenty-eight trillion, nine hundred ninety-one billion, six hundred ninety-nine million, two hundred eighteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.899169921872 × 10¹³

Factors of 28991699218720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 84715

Divisors of 28991699218720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 73 80 112 140 146 160 224 280 292 365 511 560 584 730 1022 1120 1168 1460 2044 2336 2555 2920 4088 4421 5110 5840 8176 8842 10220 11680 16352 17684 20440 22105 30947 35368 40880 44210 61894 70736 80207 81760 88420 123788 141472 154735 160414 176840 247576 309470 320828 322733 353680 401035 495152 561449 618940 641656 645466 707360 802070 990304 1122898 1237880 1283312 1290932 1604140 1613665 2245796 2259131 2475760 2566624 2581864 2807245 3208280 3227330 4491592 4518262 4951520 5163728 5614490 5855111 6416560 6454660 8983184 9036524 10327456 11228980 11295655 11710222 12833120 12909320 17966368 18073048 22457960 22591310 23420444 25818640 29275555 36146096 40985777 44915920 45182620 46840888 51637280 58551110 72292192 81971554 89831840 90365240 93681776 117102220 163943108 180730480 187363552 204928885 234204440 327886216 354595147 361460960 409857770 468408880 655772432 709190294 819715540 936817760 1311544864 1418380588 1639431080 1772975735 2482166029 2836761176 3278862160 3545951470 4964332058 5673522352 6557724320 7091902940 9928664116 11347044704 12410830145 14183805880 19857328232 24821660290 25885445731 28367611760 39714656464 49643320580 51770891462 56735223520 79429312928 99286641160 103541782924 129427228655 181198120117 198573282320 207083565848 258854457310 362396240234 397146564640 414167131696 517708914620 724792480468 828334263392 905990600585 1035417829240 1449584960936 1811981201170 2070835658480 2899169921872 3623962402340 4141671316960 5798339843744 7247924804680 14495849609360 28991699218720
• Sum of all divisors σ(n): 79368821554176
• Sum of proper divisors (its aliquot sum) s(n): 50377122335456
• 28991699218720 is an abundant number, because the sum of its proper divisors (50377122335456) is greater than itself. Its abundance is 21385423116736

Bases of 28991699218720

• Binary: 110100101111000100111111011101111000100100000₂
• Hexadecimal: 0x1A5E27EEF120
• Base-36: A9YLP661S

Squares and roots of 28991699218720

• 28991699218720 squared (28991699218720²) is 840518623588729858398438400
• 28991699218720 cubed (28991699218720³) is 24368063122816989198327142791748046848000
• The square root of 28991699218720 is 5384394.0437824571
• The cube root of 28991699218720 is 30720.2366403507

Scales and comparisons

• 28,991,699,218,720 seconds is equal to 921,846 years, 18 weeks, 4 days, 6 hours, 58 minutes, 40 seconds.
• To count from 1 to 28,991,699,218,720 would take you about two million, three hundred four thousand, six hundred fifteen 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 28991699218720 cubic inches would be around 2560 feet tall.

Recreational maths with 28991699218720

• 28991699218720 backwards is 02781299619982
• 28991699218720 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 28991699218720's digits is 73
• More coming soon!