21078054400

Names of 21078054400

• Cardinal: 21078054400 can be written as Twenty-one billion, seventy-eight million, fifty-four thousand, four hundred.

Scientific notation

• Scientific notation: 2.10780544 × 10¹⁰

Factors of 21078054400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 860

Divisors of 21078054400

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 64 65 80 100 104 128 130 160 197 200 208 256 260 320 325 394 400 416 512 520 640 643 650 788 800 832 985 1040 1280 1286 1300 1576 1600 1664 1970 2080 2560 2561 2572 2600 3152 3200 3215 3328 3940 4160 4925 5122 5144 5200 6304 6400 6430 6656 7880 8320 8359 9850 10244 10288 10400 12608 12800 12805 12860 15760 16075 16640 16718 19700 20488 20576 20800 25216 25610 25720 31520 32150 33280 33436 39400 40976 41152 41600 41795 50432 51220 51440 63040 64025 64300 66872 78800 81952 82304 83200 83590 100864 102440 102880 126080 126671 128050 128600 133744 157600 163904 164608 166400 167180 204880 205760 208975 252160 253342 256100 257200 267488 315200 327808 329216 334360 409760 411520 417950 504320 506684 512200 514400 534976 630400 633355 655616 668720 819520 823040 835900 1013368 1024400 1028800 1069952 1260800 1266710 1311232 1337440 1639040 1646080 1646723 1671800 2026736 2048800 2057600 2139904 2521600 2533420 2674880 3166775 3278080 3293446 3343600 4053472 4097600 4115200 4279808 5066840 5349760 6333550 6556160 6586892 6687200 8106944 8195200 8230400 8233615 10133680 10699520 12667100 13173784 13374400 16213888 16390400 16467230 20267360 21399040 25334200 26347568 26748800 32427776 32780800 32934460 40534720 41168075 50668400 52695136 53497600 64855552 65868920 81069440 82336150 101336800 105390272 106995200 131737840 162138880 164672300 202673600 210780544 263475680 324277760 329344600 405347200 421561088 526951360 658689200 810694400 843122176 1053902720 1317378400 1621388800 2107805440 2634756800 4215610880 5269513600 10539027200 21078054400
• Sum of all divisors σ(n): 56613032784
• Sum of proper divisors (its aliquot sum) s(n): 35534978384
• 21078054400 is an abundant number, because the sum of its proper divisors (35534978384) is greater than itself. Its abundance is 14456923984

Bases of 21078054400

• Binary: 10011101000010110011001011000000000₂
• Hexadecimal: 0x4E8599600
• Base-36: 9OLBUV4

Squares and roots of 21078054400

• 21078054400 squared (21078054400²) is 444284377289359360000
• 21078054400 cubed (21078054400³) is 9364650273575241131229184000000
• The square root of 21078054400 is 145182.8309408519
• The cube root of 21078054400 is 2762.3381432983

Scales and comparisons

• 21,078,054,400 seconds is equal to 670 years, 11 weeks, 1 day, 23 hours, 6 minutes, 40 seconds.
• To count from 1 to 21,078,054,400 would take you about one thousand, three hundred forty 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 21078054400 cubic inches would be around 230.2 feet tall.

Recreational maths with 21078054400

• 21078054400 backwards is 00445087012
• The number of decimal digits it has is: 11
• The sum of 21078054400's digits is 31
• More coming soon!