21007796784
21,007,796,784 is an even composite number composed of seven prime numbers multiplied together.
What does the number 21007796784 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 320 divisors.
21007796784 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21007796784:
24 × 3 × 13 × 17 × 31 × 193 × 331
(2 × 2 × 2 × 2 × 3 × 13 × 17 × 31 × 193 × 331)See below for interesting mathematical facts about the number 21007796784 from the Numbermatics database.
Names of 21007796784
- Cardinal: 21007796784 can be written as Twenty-one billion, seven million, seven hundred ninety-six thousand, seven hundred eighty-four.
Scientific notation
- Scientific notation: 2.1007796784 × 1010
Factors of 21007796784
Divisors of 21007796784
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 6 8 12 13 16 17 24 26 31 34 39 48 51 52 62 68 78 93 102 104 124 136 156 186 193 204 208 221 248 272 312 331 372 386 403 408 442 496 527 579 624 662 663 744 772 806 816 884 993 1054 1158 1209 1324 1326 1488 1544 1581 1612 1768 1986 2108 2316 2418 2509 2648 2652 3088 3162 3224 3281 3536 3972 4216 4303 4632 4836 5018 5296 5304 5627 5983 6324 6448 6562 6851 7527 7944 8432 8606 9264 9672 9843 10036 10261 10608 11254 11966 12648 12909 13124 13702 15054 15888 16881 17212 17949 19344 19686 20072 20522 20553 22508 23932 25296 25818 26248 27404 30108 30783 33762 34424 35898 39372 40144 41044 41106 42653 45016 47864 51636 52496 54808 60216 61566 63883 67524 68848 71796 73151 77779 78744 82088 82212 85306 90032 95728 101711 103272 109616 120432 123132 127766 127959 133393 135048 143592 146302 155558 157488 164176 164424 170612 174437 191649 203422 206544 219453 233337 246264 255532 255918 266786 270096 287184 292604 305133 311116 328848 341224 348874 383298 400179 406844 438906 466674 492528 511064 511836 523311 533572 585208 610266 622232 682448 697748 766596 800358 813688 830479 877812 933348 1022128 1023672 1046622 1067144 1086011 1170416 1220532 1244464 1322243 1395496 1533192 1600716 1627376 1660958 1755624 1866696 1980373 2047344 2093244 2134288 2172022 2267681 2441064 2491437 2644486 2790992 3066384 3201432 3258033 3321916 3511248 3733392 3960746 3966729 4186488 4344044 4535362 4882128 4982874 5288972 5941119 6402864 6516066 6643832 6803043 7921492 7933458 8372976 8688088 9070724 9965748 10577944 11882238 13032132 13287664 13606086 14118143 15842984 15866916 17376176 18141448 19931496 21155888 23764476 25744849 26064264 27212172 28236286 31685968 31733832 33666341 36282896 39862992 42354429 47528952 51489698 52128528 54424344 56472572 63467664 67332682 77234547 84708858 95057904 100999023 102979396 108848688 112945144 134665364 154469094 169417716 201998046 205958792 225890288 269330728 308938188 338835432 403996092 411917584 437662433 538661456 617876376 677670864 807992184 875324866 1235752752 1312987299 1615984368 1750649732 2625974598 3501299464 5251949196 7002598928 10503898392 21007796784
- Sum of all divisors σ(n): 64403877888
- Sum of proper divisors (its aliquot sum) s(n): 43396081104
- 21007796784 is an abundant number, because the sum of its proper divisors (43396081104) is greater than itself. Its abundance is 22388284320
Bases of 21007796784
- Binary: 100111001000010100110001010001100002
- Hexadecimal: 0x4E4298A30
- Base-36: 9NFHZQO
Squares and roots of 21007796784
- 21007796784 squared (210077967842) is 441327525717840742656
- 21007796784 cubed (210077967843) is 9271318975465932044992888418304
-
The
square root of 21007796784 is 144940.6664259551 -
The
cube root of 21007796784 is 2759.2655743857
Scales and comparisons
How big is 21007796784?- 21,007,796,784 seconds is equal to 667 years, 51 weeks, 19 hours, 6 minutes, 24 seconds.
-
To count from 1 to 21,007,796,784 would take you about one thousand, three hundred thirty-five 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 21007796784 cubic inches would be around 229.9 feet tall.
Recreational maths with 21007796784
- 21007796784 backwards is 48769770012
- 21007796784 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21007796784's digits is 51
- More coming soon!
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