21381724224

Names of 21381724224

• Cardinal: 21381724224 can be written as Twenty-one billion, three hundred eighty-one million, seven hundred twenty-four thousand, two hundred twenty-four.

Scientific notation

• Scientific notation: 2.1381724224 × 10¹⁰

Factors of 21381724224

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2316

Divisors of 21381724224

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 64 72 81 84 96 108 112 126 144 162 168 189 192 216 224 252 288 293 324 336 378 432 448 504 567 576 586 648 672 756 864 879 1008 1134 1172 1296 1344 1512 1728 1758 2011 2016 2051 2268 2344 2592 2637 3024 3516 4022 4032 4102 4536 4688 5184 5274 6033 6048 6153 7032 7911 8044 8204 9072 9376 10548 12066 12096 12306 14064 14077 15822 16088 16408 18099 18144 18459 18752 21096 23733 24132 24612 28128 28154 31644 32176 32816 36198 36288 36918 42192 42231 47466 48264 49224 54297 55377 56256 56308 63288 64352 65632 72396 73836 84384 84462 94932 96528 98448 108594 110754 112616 126576 126693 128704 131264 144792 147672 162891 166131 168768 168924 189864 193056 196896 217188 221508 225232 253152 253386 289584 295344 325782 332262 337848 379728 380079 386112 393792 434376 443016 450464 506304 506772 579168 589223 590688 651564 664524 675696 759456 760158 868752 886032 900928 1013544 1140237 1158336 1178446 1181376 1303128 1329048 1351392 1518912 1520316 1737504 1767669 1772064 2027088 2280474 2356892 2606256 2658096 2702784 3040632 3475008 3535338 3544128 4054176 4124561 4560948 4713784 5212512 5303007 5316192 6081264 7070676 8108352 8249122 9121896 9427568 10425024 10606014 10632384 12162528 12373683 14141352 15909021 16498244 18243792 18855136 21212028 24325056 24747366 28282704 31818042 32996488 36487584 37121049 37710272 42424056 47727063 49494732 56565408 63636084 65992976 72975168 74242098 84848112 95454126 98989464 111363147 113130816 127272168 131985952 148484196 169696224 190908252 197978928 222726294 254544336 263971904 296968392 334089441 339392448 381816504 395957856 445452588 509088672 593936784 668178882 763633008 791915712 890905176 1018177344 1187873568 1336357764 1527266016 1781810352 2375747136 2672715528 3054532032 3563620704 5345431056 7127241408 10690862112 21381724224
• Sum of all divisors σ(n): 72720086208
• Sum of proper divisors (its aliquot sum) s(n): 51338361984
• 21381724224 is an abundant number, because the sum of its proper divisors (51338361984) is greater than itself. Its abundance is 29956637760

Bases of 21381724224

• Binary: 10011111010011100110011100001000000₂
• Hexadecimal: 0x4FA733840
• Base-36: 9TM4K00

Squares and roots of 21381724224

• 21381724224 squared (21381724224²) is 457178130791188402176
• 21381724224 cubed (21381724224³) is 9775256713820993344554433511424
• The square root of 21381724224 is 146224.9097247115
• The cube root of 21381724224 is 2775.5405369237

Scales and comparisons

• 21,381,724,224 seconds is equal to 679 years, 45 weeks, 2 days, 15 hours, 50 minutes, 24 seconds.
• To count from 1 to 21,381,724,224 would take you about one thousand, three hundred fifty-nine 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 21381724224 cubic inches would be around 231.3 feet tall.

Recreational maths with 21381724224

• 21381724224 backwards is 42242718312
• 21381724224 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21381724224's digits is 36
• More coming soon!