21409697792

Names of 21409697792

• Cardinal: 21409697792 can be written as Twenty-one billion, four hundred nine million, six hundred ninety-seven thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 2.1409697792 × 10¹⁰

Factors of 21409697792

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 320

Divisors of 21409697792

• Number of divisors d(n): 156
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 196 224 256 311 343 392 448 512 622 686 784 896 1024 1244 1372 1568 1792 2048 2177 2401 2488 2744 3136 3584 4096 4354 4802 4976 5488 6272 7168 8708 9604 9952 10976 12544 14336 15239 16807 17416 19208 19904 21952 25088 28672 30478 33614 34832 38416 39808 43904 50176 60956 67228 69664 76832 79616 87808 100352 106673 121912 134456 139328 153664 159232 175616 200704 213346 243824 268912 278656 307328 318464 351232 426692 487648 537824 557312 614656 636928 702464 746711 853384 975296 1075648 1114624 1229312 1273856 1404928 1493422 1706768 1950592 2151296 2229248 2458624 2986844 3413536 3901184 4302592 4458496 4917248 5226977 5973688 6827072 7802368 8605184 8916992 9834496 10453954 11947376 13654144 15604736 17210368 20907908 23894752 27308288 31209472 34420736 41815816 47789504 54616576 62418944 68841472 83631632 95579008 109233152 167263264 191158016 218466304 334526528 382316032 436932608 669053056 764632064 1338106112 1529264128 2676212224 3058528256 5352424448 10704848896 21409697792
• Sum of all divisors σ(n): 50110047936
• Sum of proper divisors (its aliquot sum) s(n): 28700350144
• 21409697792 is an abundant number, because the sum of its proper divisors (28700350144) is greater than itself. Its abundance is 7290652352

Bases of 21409697792

• Binary: 10011111100000111100001000000000000₂
• Hexadecimal: 0x4FC1E1000
• Base-36: 9U2S4JK

Squares and roots of 21409697792

• 21409697792 squared (21409697792²) is 458375159544769675264
• 21409697792 cubed (21409697792³) is 9813673641213303041648217817088
• The square root of 21409697792 is 146320.5309995833
• The cube root of 21409697792 is 2776.7504165435

Scales and comparisons

• 21,409,697,792 seconds is equal to 680 years, 39 weeks, 4 days, 10 hours, 16 minutes, 32 seconds.
• To count from 1 to 21,409,697,792 would take you about one thousand, three hundred sixty-one 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 21409697792 cubic inches would be around 231.4 feet tall.

Recreational maths with 21409697792

• 21409697792 backwards is 29779690412
• 21409697792 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21409697792's digits is 56
• More coming soon!