21195209816

Names of 21195209816

• Cardinal: 21195209816 can be written as Twenty-one billion, one hundred ninety-five million, two hundred nine thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 2.1195209816 × 10¹⁰

Factors of 21195209816

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 8129

Divisors of 21195209816

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 8 11 17 22 29 34 44 58 61 68 88 116 122 136 187 232 244 319 374 488 493 638 671 748 986 1037 1276 1342 1496 1769 1972 2074 2552 2684 3538 3944 4148 5368 5423 7076 8009 8296 10846 11407 14152 16018 19459 21692 22814 30073 32036 38918 43384 45628 60146 64072 77836 88099 91256 120292 136153 155672 176198 232261 240584 272306 330803 352396 464522 488549 544612 661606 704792 929044 977098 1089224 1323212 1497683 1858088 1954196 2554871 2646424 2995366 3908392 3948437 5109742 5374039 5990732 7896874 8305333 10219484 10748078 11981464 14167921 15793748 16610666 20438968 21496156 28335842 31587496 33221332 42992312 43432807 56671684 66442664 86865614 91358663 113343368 155847131 173731228 182717326 240854657 311694262 347462456 365434652 481709314 623388524 730869304 963418628 1246777048 1926837256 2649401227 5298802454 10597604908 21195209816
• Sum of all divisors σ(n): 48271464000
• Sum of proper divisors (its aliquot sum) s(n): 27076254184
• 21195209816 is an abundant number, because the sum of its proper divisors (27076254184) is greater than itself. Its abundance is 5881044368

Bases of 21195209816

• Binary: 10011101111010101010011110001011000₂
• Hexadecimal: 0x4EF553C58
• Base-36: 9QJ2WK8

Squares and roots of 21195209816

• 21195209816 squared (21195209816²) is 449236919144262753856
• 21195209816 cubed (21195209816³) is 9521670758356076240611883050496
• The square root of 21195209816 is 145585.7472969109
• The cube root of 21195209816 is 2767.4465391225

Scales and comparisons

• 21,195,209,816 seconds is equal to 673 years, 48 weeks, 6 days, 22 hours, 16 minutes, 56 seconds.
• To count from 1 to 21,195,209,816 would take you about one thousand, three hundred forty-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 21195209816 cubic inches would be around 230.6 feet tall.

Recreational maths with 21195209816

• 21195209816 backwards is 61890259112
• 21195209816 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21195209816's digits is 44
• More coming soon!