21241342784

Names of 21241342784

• Cardinal: 21241342784 can be written as Twenty-one billion, two hundred forty-one million, three hundred forty-two thousand, seven hundred eighty-four.

Scientific notation

• Scientific notation: 2.1241342784 × 10¹⁰

Factors of 21241342784

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 247

Divisors of 21241342784

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 4 8 16 17 29 32 34 58 64 68 116 136 199 232 272 289 398 464 493 544 578 796 928 986 1088 1156 1592 1856 1972 2312 3184 3383 3944 4624 5771 6368 6766 7888 8381 9248 11542 12736 13532 15776 16762 18496 23084 27064 31552 33524 39601 46168 54128 57511 67048 79202 92336 98107 108256 115022 134096 158404 184672 196214 216512 230044 268192 316808 369344 392428 460088 536384 633616 673217 784856 920176 1148429 1267232 1346434 1569712 1667819 1840352 2296858 2534464 2692868 3139424 3335638 3680704 4593716 5385736 6278848 6671276 9187432 10771472 11444689 13342552 18374864 19523293 21542944 22889378 26685104 36749728 39046586 43085888 45778756 53370208 73499456 78093172 91557512 106740416 156186344 183115024 312372688 331895981 366230048 624745376 663791962 732460096 1249490752 1327583924 2655167848 5310335696 10620671392 21241342784
• Sum of all divisors σ(n): 46554035670
• Sum of proper divisors (its aliquot sum) s(n): 25312692886
• 21241342784 is an abundant number, because the sum of its proper divisors (25312692886) is greater than itself. Its abundance is 4071350102

Bases of 21241342784

• Binary: 10011110010000101010010101101000000₂
• Hexadecimal: 0x4F2152B40
• Base-36: 9RAJOZK

Squares and roots of 21241342784

• 21241342784 squared (21241342784²) is 451194643267388870656
• 21241342784 cubed (21241342784³) is 9583980079947204770230734946304
• The square root of 21241342784 is 145744.1003402883
• The cube root of 21241342784 is 2769.4529359673

Scales and comparisons

• 21,241,342,784 seconds is equal to 675 years, 21 weeks, 1 day, 20 hours, 59 minutes, 44 seconds.
• To count from 1 to 21,241,342,784 would take you about one thousand, three hundred fifty 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 21241342784 cubic inches would be around 230.8 feet tall.

Recreational maths with 21241342784

• 21241342784 backwards is 48724314212
• The number of decimal digits it has is: 11
• The sum of 21241342784's digits is 38
• More coming soon!