21391784112

Names of 21391784112

• Cardinal: 21391784112 can be written as Twenty-one billion, three hundred ninety-one million, seven hundred eighty-four thousand, one hundred twelve.

Scientific notation

• Scientific notation: 2.1391784112 × 10¹⁰

Factors of 21391784112

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 326

Divisors of 21391784112

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 29 31 41 48 58 62 82 87 93 107 113 116 123 124 164 174 186 214 226 232 246 248 321 328 339 348 372 428 452 464 492 496 642 656 678 696 744 856 899 904 984 1189 1271 1284 1356 1392 1488 1712 1798 1808 1968 2378 2542 2568 2697 2712 3103 3277 3317 3503 3567 3596 3813 4387 4633 4756 5084 5136 5394 5424 6206 6554 6634 7006 7134 7192 7626 8774 9266 9309 9512 9831 9951 10168 10509 10788 12091 12412 13108 13161 13268 13899 14012 14268 14384 15252 17548 18532 18618 19024 19662 19902 20336 21018 21576 24182 24824 26216 26322 26536 27798 28024 28536 30504 35096 36273 36859 37064 37236 39324 39804 42036 43152 48364 49648 52432 52644 53072 55596 56048 57072 61008 70192 72546 73718 74128 74472 78648 79608 84072 96193 96728 101587 105288 110577 111192 127223 134357 135997 143623 145092 147436 148944 157296 159216 168144 192386 193456 203174 210576 221154 222384 254446 268714 271994 287246 288579 290184 294872 304761 350639 374821 381669 384772 403071 406348 407991 430869 442308 495731 508892 537428 543988 574492 577158 580368 589744 609522 701278 749642 763338 769544 806142 812696 815982 861738 884616 991462 1017784 1051917 1074856 1087976 1124463 1148984 1154316 1219044 1402556 1487193 1499284 1526676 1539088 1612284 1625392 1631964 1723476 1769232 1982924 2035568 2103834 2149712 2175952 2248926 2297968 2308632 2438088 2805112 2974386 2998568 3053352 3224568 3263928 3446952 3943913 3965848 4165067 4207668 4497852 4617264 4876176 5610224 5948772 5997136 6106704 6449136 6527856 6893904 7887826 7931696 8330134 8415336 8995704 10869809 11831739 11897544 12495201 14376199 15367661 15775652 16660268 16830672 17991408 21739618 23663478 23795088 24990402 28752398 30735322 31551304 32609427 33320536 43128597 43479236 46102983 47326956 49980804 57504796 61470644 63102608 65218854 66641072 86257194 86958472 92205966 94653912 99961608 115009592 122941288 130437708 172514388 173916944 184411932 189307824 199923216 230019184 245882576 260875416 345028776 368823864 445662169 521750832 690057552 737647728 891324338 1336986507 1782648676 2673973014 3565297352 5347946028 7130594704 10695892056 21391784112
• Sum of all divisors σ(n): 61556060160
• Sum of proper divisors (its aliquot sum) s(n): 40164276048
• 21391784112 is an abundant number, because the sum of its proper divisors (40164276048) is greater than itself. Its abundance is 18772491936

Bases of 21391784112

• Binary: 10011111011000011001011100010110000₂
• Hexadecimal: 0x4FB0CB8B0
• Base-36: 9TS469C

Squares and roots of 21391784112

• 21391784112 squared (21391784112²) is 457608427494415628544
• 21391784112 cubed (21391784112³) is 9789060688792344211412032892928
• The square root of 21391784112 is 146259.3043604407
• The cube root of 21391784112 is 2775.9757567223

Scales and comparisons

• 21,391,784,112 seconds is equal to 680 years, 10 weeks, 2 hours, 15 minutes, 12 seconds.
• To count from 1 to 21,391,784,112 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 21391784112 cubic inches would be around 231.3 feet tall.

Recreational maths with 21391784112

• 21391784112 backwards is 21148719312
• The number of decimal digits it has is: 11
• The sum of 21391784112's digits is 39
• More coming soon!