20810916720

Names of 20810916720

• Cardinal: 20810916720 can be written as Twenty billion, eight hundred ten million, nine hundred sixteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.081091672 × 10¹⁰

Factors of 20810916720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1642

Divisors of 20810916720

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 30 33 36 40 44 45 48 55 60 66 72 80 88 90 99 110 120 132 144 165 176 180 198 220 240 264 330 360 396 440 495 528 660 720 792 880 990 1320 1584 1621 1980 2640 3242 3960 4863 6484 7920 8105 9726 12968 14589 16210 17831 19452 24315 25936 29178 32420 35662 38904 48630 53493 58356 64840 71324 72945 77808 89155 97260 106986 116712 129680 142648 145890 160479 178310 194520 213972 233424 267465 285296 291780 320958 356620 389040 427944 534930 583560 641916 713240 802395 855888 1069860 1167120 1283832 1426480 1604790 2139720 2567664 2627641 3209580 4279440 5255282 6419160 7882923 10510564 12838320 13138205 15765846 21021128 23648769 26276410 28904051 31531692 39414615 42042256 47297538 52552820 57808102 63063384 78829230 86712153 94595076 105105640 115616204 118243845 126126768 144520255 157658460 173424306 189190152 210211280 231232408 236487690 260136459 289040510 315316920 346848612 378380304 433560765 462464816 472975380 520272918 578081020 630633840 693697224 867121530 945950760 1040545836 1156162040 1300682295 1387394448 1734243060 1891901520 2081091672 2312324080 2601364590 3468486120 4162183344 5202729180 6936972240 10405458360 20810916720
• Sum of all divisors σ(n): 76290695208
• Sum of proper divisors (its aliquot sum) s(n): 55479778488
• 20810916720 is an abundant number, because the sum of its proper divisors (55479778488) is greater than itself. Its abundance is 34668861768

Bases of 20810916720

• Binary: 10011011000011011010110001101110000₂
• Hexadecimal: 0x4D86D6370
• Base-36: 9K6A640

Squares and roots of 20810916720

• 20810916720 squared (20810916720²) is 433094254726775558400
• 20810916720 cubed (20810916720³) is 9013088467029392499993896448000
• The square root of 20810916720 is 144259.8929709849
• The cube root of 20810916720 is 2750.6187795453

Scales and comparisons

• 20,810,916,720 seconds is equal to 661 years, 37 weeks, 4 days, 2 hours, 12 minutes.
• To count from 1 to 20,810,916,720 would take you about one thousand, three hundred twenty-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 20810916720 cubic inches would be around 229.2 feet tall.

Recreational maths with 20810916720

• 20810916720 backwards is 02761901802
• 20810916720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20810916720's digits is 36
• More coming soon!