21390762640
21,390,762,640 is an even composite number composed of six prime numbers multiplied together.
21390762640 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 21390762640:
24 × 5 × 132 × 37 × 61 × 701
(2 × 2 × 2 × 2 × 5 × 13 × 13 × 37 × 61 × 701)See below for interesting mathematical facts about the number 21390762640 from the Numbermatics database.
Names of 21390762640
- Cardinal: 21390762640 can be written as Twenty-one billion, three hundred ninety million, seven hundred sixty-two thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.139076264 × 1010
Factors of 21390762640
Divisors of 21390762640
- Number of divisors d(n): 240
-
Complete list of divisors:
1 2 4 5 8 10 13 16 20 26 37 40 52 61 65 74 80 104 122 130 148 169 185 208 244 260 296 305 338 370 481 488 520 592 610 676 701 740 793 845 962 976 1040 1220 1352 1402 1480 1586 1690 1924 2257 2405 2440 2704 2804 2960 3172 3380 3505 3848 3965 4514 4810 4880 5608 6253 6344 6760 7010 7696 7930 9028 9113 9620 10309 11216 11285 12506 12688 13520 14020 15860 18056 18226 19240 20618 22570 25012 25937 28040 29341 31265 31720 36112 36452 38480 41236 42761 45140 45565 50024 51545 51874 56080 58682 62530 63440 72904 82472 85522 90280 91130 100048 103090 103748 117364 118469 125060 129685 145808 146705 164944 171044 180560 182260 206180 207496 213805 234728 236938 250120 259370 293410 337181 342088 364520 381433 412360 414992 427610 469456 473876 500240 518740 555893 586820 592345 674362 684176 729040 762866 824720 855220 947752 1037480 1111786 1173640 1184690 1348724 1525732 1582157 1685905 1710440 1895504 1907165 2074960 2223572 2347280 2369380 2697448 2779465 3051464 3164314 3371810 3420880 3814330 4383353 4447144 4738760 5394896 5558930 6102928 6328628 6743620 7226609 7628660 7910785 8766706 8894288 9477520 11117860 12657256 13487240 14453218 15257320 15821570 17533412 20568041 21916765 22235720 25314512 26974480 28906436 30514640 31643140 35066824 36133045 41136082 43833530 44471440 57812872 63286280 70133648 72266090 82272164 87667060 102840205 115625744 126572560 144532180 164544328 175334120 205680410 267384533 289064360 329088656 350668240 411360820 534769066 578128720 822721640 1069538132 1336922665 1645443280 2139076264 2673845330 4278152528 5347690660 10695381320 21390762640
- Sum of all divisors σ(n): 56295856656
- Sum of proper divisors (its aliquot sum) s(n): 34905094016
- 21390762640 is an abundant number, because the sum of its proper divisors (34905094016) is greater than itself. Its abundance is 13514331376
Bases of 21390762640
- Binary: 100111110101111110100100010100100002
- Hexadecimal: 0x4FAFD2290
- Base-36: 9TRIA34
Squares and roots of 21390762640
- 21390762640 squared (213907626402) is 457564726320819769600
- 21390762640 cubed (213907626403) is 9787658453165216181733087744000
-
The
square root of 21390762640 is 146255.8123289465 -
The
cube root of 21390762640 is 2775.9315711193
Scales and comparisons
How big is 21390762640?- 21,390,762,640 seconds is equal to 680 years, 8 weeks, 2 days, 6 hours, 30 minutes, 40 seconds.
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To count from 1 to 21,390,762,640 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 21390762640 cubic inches would be around 231.3 feet tall.
Recreational maths with 21390762640
- 21390762640 backwards is 04626709312
- 21390762640 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21390762640's digits is 40
- More coming soon!
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