20408821728

Names of 20408821728

• Cardinal: 20408821728 can be written as Twenty billion, four hundred eight million, eight hundred twenty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.0408821728 × 10¹⁰

Factors of 20408821728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 213

Divisors of 20408821728

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 8 12 16 19 24 31 32 38 48 57 61 62 76 93 96 97 114 122 124 152 183 186 194 228 244 248 291 304 366 372 388 456 488 496 582 589 608 732 744 776 912 976 992 1159 1164 1178 1464 1488 1552 1767 1824 1843 1891 1952 2318 2328 2356 2928 2976 3007 3104 3477 3534 3686 3721 3782 4636 4656 4712 5529 5673 5856 5917 6014 6954 7068 7372 7442 7564 9021 9272 9312 9424 11058 11163 11346 11834 12028 13908 14136 14744 14884 15128 17751 18042 18544 18848 22116 22326 22692 23668 24056 27816 28272 29488 29768 30256 35502 35929 36084 37088 44232 44652 45384 47336 48112 55632 56544 57133 58976 59536 60512 70699 71004 71858 72168 88464 89304 90768 94672 96224 107787 111264 112423 114266 115351 119072 141398 142008 143716 144336 171399 176928 178608 181536 183427 189344 212097 215574 224846 228532 230702 282796 284016 287432 288672 337269 342798 346053 357216 360937 366854 424194 431148 449692 457064 461404 550281 565592 568032 574864 674538 685596 692106 721874 733708 848388 862296 899384 914128 922808 1082811 1100562 1131184 1149728 1349076 1371192 1384212 1443748 1467416 1696776 1724592 1798768 1828256 1845616 2165622 2191669 2201124 2262368 2698152 2742384 2768424 2887496 2934832 3393552 3449184 3485113 3597536 3691232 4331244 4383338 4402248 5396304 5484768 5536848 5774992 5869664 6575007 6787104 6857803 6970226 8662488 8766676 8804496 10455339 10792608 11073696 11189047 11549984 13150014 13715606 13940452 17324976 17533352 17608992 20573409 20910678 22378094 26300028 27431212 27880904 33567141 34649952 35066704 41146818 41821356 44756188 52600056 54862424 55761808 67134282 70133408 82293636 83642712 89512376 105200112 109724848 111523616 134268564 164587272 167285424 179024752 210400224 212591893 219449696 268537128 329174544 334570848 358049504 425183786 537074256 637775679 658349088 850367572 1074148512 1275551358 1700735144 2551102716 3401470288 5102205432 6802940576 10204410864 20408821728
• Sum of all divisors σ(n): 59791979520
• Sum of proper divisors (its aliquot sum) s(n): 39383157792
• 20408821728 is an abundant number, because the sum of its proper divisors (39383157792) is greater than itself. Its abundance is 18974336064

Bases of 20408821728

• Binary: 10011000000011101011110011111100000₂
• Hexadecimal: 0x4C075E7E0
• Base-36: 9DIVVMO

Squares and roots of 20408821728

• 20408821728 squared (20408821728²) is 416520004325284905984
• 20408821728 cubed (20408821728³) is 8500682514420528569036696420352
• The square root of 20408821728 is 142859.4474579821
• The cube root of 20408821728 is 2732.7882227383

Scales and comparisons

• 20,408,821,728 seconds is equal to 648 years, 48 weeks, 5 days, 5 hours, 8 minutes, 48 seconds.
• To count from 1 to 20,408,821,728 would take you about one thousand, two hundred ninety-seven 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 20408821728 cubic inches would be around 227.7 feet tall.

Recreational maths with 20408821728

• 20408821728 backwards is 82712880402
• The number of decimal digits it has is: 11
• The sum of 20408821728's digits is 42
• More coming soon!