21642646464

Names of 21642646464

• Cardinal: 21642646464 can be written as Twenty-one billion, six hundred forty-two million, six hundred forty-six thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 2.1642646464 × 10¹⁰

Factors of 21642646464

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1977605

Divisors of 21642646464

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 32 36 38 48 57 64 72 76 96 114 144 152 171 192 228 288 304 342 456 576 608 684 912 1216 1368 1824 2736 3648 5472 10944 1977581 3955162 5932743 7910324 11865486 15820648 17798229 23730972 31641296 35596458 37574039 47461944 63282592 71192916 75148078 94923888 112722117 126565184 142385832 150296156 189847776 225444234 284771664 300592312 338166351 379695552 450888468 569543328 601184624 676332702 901776936 1139086656 1202369248 1352665404 1803553872 2404738496 2705330808 3607107744 5410661616 7214215488 10821323232 21642646464
• Sum of all divisors σ(n): 65299757640
• Sum of proper divisors (its aliquot sum) s(n): 43657111176
• 21642646464 is an abundant number, because the sum of its proper divisors (43657111176) is greater than itself. Its abundance is 22014464712

Bases of 21642646464

• Binary: 10100001010000000001001001111000000₂
• Hexadecimal: 0x50A0093C0
• Base-36: 9XXH0W0

Squares and roots of 21642646464

• 21642646464 squared (21642646464²) is 468404145965691703296
• 21642646464 cubed (21642646464³) is 10137505333407317407653311545344
• The square root of 21642646464 is 147114.3992408629
• The cube root of 21642646464 is 2786.7849410917

Scales and comparisons

• 21,642,646,464 seconds is equal to 688 years, 8 weeks, 5 days, 14 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,642,646,464 would take you about one thousand, three hundred seventy-six 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 21642646464 cubic inches would be around 232.2 feet tall.

Recreational maths with 21642646464

• 21642646464 backwards is 46464624612
• The number of decimal digits it has is: 11
• The sum of 21642646464's digits is 45
• More coming soon!