21387274776

Names of 21387274776

• Cardinal: 21387274776 can be written as Twenty-one billion, three hundred eighty-seven million, two hundred seventy-four thousand, seven hundred seventy-six.

Scientific notation

• Scientific notation: 2.1387274776 × 10¹⁰

Factors of 21387274776

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2685

Divisors of 21387274776

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 23 24 27 28 36 42 46 54 56 63 69 72 84 92 108 126 138 161 168 184 189 207 216 252 257 276 322 378 414 483 504 514 552 621 644 756 771 828 966 1028 1242 1288 1449 1512 1542 1656 1799 1932 2056 2313 2393 2484 2898 3084 3598 3864 4347 4626 4786 4968 5397 5796 5911 6168 6939 7179 7196 8694 9252 9572 10794 11592 11822 13878 14358 14392 16191 16751 17388 17733 18504 19144 21537 21588 23644 27756 28716 32382 33502 34776 35466 41377 43074 43176 47288 48573 50253 53199 55039 55512 57432 64611 64764 67004 70932 82754 86148 97146 100506 106398 110078 124131 129222 129528 134008 141864 150759 159597 165117 165508 172296 194292 201012 212796 220156 248262 258444 301518 319194 330234 331016 372393 385273 388584 402024 425592 440312 452277 495351 496524 516888 603036 615001 638388 660468 744786 770546 904554 990702 993048 1117179 1155819 1206072 1230002 1276776 1320936 1486053 1489572 1541092 1809108 1845003 1981404 2234358 2311638 2460004 2972106 2979144 3082184 3467457 3618216 3690006 3962808 4305007 4468716 4623276 4920008 5535009 5944212 6934914 7380012 8610014 8937432 9246552 10402371 11070018 11888424 12915021 13869828 14145023 14760024 16605027 17220028 20804742 22140036 25830042 27739656 28290046 33210054 34440056 38745063 41609484 42435069 44280072 51660084 56580092 66420108 77490126 83218968 84870138 99015161 103320168 113160184 116235189 127305207 132840216 154980252 169740276 198030322 232470378 254610414 297045483 309960504 339480552 381915621 396060644 464940756 509220828 594090966 763831242 792121288 891136449 929881512 1018441656 1188181932 1527662484 1782272898 2376363864 2673409347 3055324968 3564545796 5346818694 7129091592 10693637388 21387274776
• Sum of all divisors σ(n): 71153510400
• Sum of proper divisors (its aliquot sum) s(n): 49766235624
• 21387274776 is an abundant number, because the sum of its proper divisors (49766235624) is greater than itself. Its abundance is 28378960848

Bases of 21387274776

• Binary: 10011111010110001111110101000011000₂
• Hexadecimal: 0x4FAC7EA18
• Base-36: 9TPFIU0

Squares and roots of 21387274776

• 21387274776 squared (21387274776²) is 457415522344125850176
• 21387274776 cubed (21387274776³) is 9782871463181387187238719960576
• The square root of 21387274776 is 146243.8879953617
• The cube root of 21387274776 is 2775.7806867049

Scales and comparisons

• 21,387,274,776 seconds is equal to 680 years, 2 weeks, 3 days, 21 hours, 39 minutes, 36 seconds.
• To count from 1 to 21,387,274,776 would take you about one thousand, three hundred sixty 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 21387274776 cubic inches would be around 231.3 feet tall.

Recreational maths with 21387274776

• 21387274776 backwards is 67747278312
• 21387274776 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21387274776's digits is 54
• More coming soon!