21307240900

Names of 21307240900

• Cardinal: 21307240900 can be written as Twenty-one billion, three hundred seven million, two hundred forty thousand, nine hundred.

Scientific notation

• Scientific notation: 2.13072409 × 10¹⁰

Factors of 21307240900

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1345

Divisors of 21307240900

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 4 5 10 11 20 22 25 44 50 55 100 110 121 220 242 275 484 550 605 1100 1210 1327 2420 2654 3025 5308 6050 6635 12100 13270 14597 26540 29194 33175 58388 66350 72985 132700 145970 160567 291940 321134 364925 642268 729850 802835 1459700 1605670 1760929 3211340 3521858 4014175 7043716 8028350 8804645 16056700 17609290 19370219 35218580 38740438 44023225 77480876 88046450 96851095 176092900 193702190 213072409 387404380 426144818 484255475 852289636 968510950 1065362045 1937021900 2130724090 4261448180 5326810225 10653620450 21307240900
• Sum of all divisors σ(n): 50860499277
• Sum of proper divisors (its aliquot sum) s(n): 29553258377
• 21307240900 is an abundant number, because the sum of its proper divisors (29553258377) is greater than itself. Its abundance is 8246017477

Bases of 21307240900

• Binary: 10011110110000000101011000111000100₂
• Hexadecimal: 0x4F602B1C4
• Base-36: 9SDS4AS

Squares and roots of 21307240900

• 21307240900 squared (21307240900²) is 453998514770632810000
• 21307240900 cubed (21307240900³) is 9673455722460081528113929000000
• 21307240900 is a perfect square number. Its square root is 145970
• The cube root of 21307240900 is 2772.3139184253

Scales and comparisons

• 21,307,240,900 seconds is equal to 677 years, 26 weeks, 1 day, 14 hours, 1 minute, 40 seconds.
• To count from 1 to 21,307,240,900 would take you about one thousand, three hundred fifty-five 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 21307240900 cubic inches would be around 231 feet tall.

Recreational maths with 21307240900

• 21307240900 backwards is 00904270312
• The number of decimal digits it has is: 11
• The sum of 21307240900's digits is 28
• More coming soon!