21397337640
21,397,337,640 is an even composite number composed of six prime numbers multiplied together.
21397337640 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21397337640:
23 × 32 × 5 × 72 × 17 × 71353
(2 × 2 × 2 × 3 × 3 × 5 × 7 × 7 × 17 × 71353)See below for interesting mathematical facts about the number 21397337640 from the Numbermatics database.
Names of 21397337640
- Cardinal: 21397337640 can be written as Twenty-one billion, three hundred ninety-seven million, three hundred thirty-seven thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.139733764 × 1010
Factors of 21397337640
Divisors of 21397337640
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 17 18 20 21 24 28 30 34 35 36 40 42 45 49 51 56 60 63 68 70 72 84 85 90 98 102 105 119 120 126 136 140 147 153 168 170 180 196 204 210 238 245 252 255 280 294 306 315 340 357 360 392 408 420 441 476 490 504 510 588 595 612 630 680 714 735 765 833 840 882 952 980 1020 1071 1176 1190 1224 1260 1428 1470 1530 1666 1764 1785 1960 2040 2142 2205 2380 2499 2520 2856 2940 3060 3332 3528 3570 4165 4284 4410 4760 4998 5355 5880 6120 6664 7140 7497 8330 8568 8820 9996 10710 12495 14280 14994 16660 17640 19992 21420 24990 29988 33320 37485 42840 49980 59976 71353 74970 99960 142706 149940 214059 285412 299880 356765 428118 499471 570824 642177 713530 856236 998942 1070295 1213001 1284354 1427060 1498413 1712472 1997884 2140590 2426002 2497355 2568708 2854120 2996826 3210885 3496297 3639003 3995768 4281180 4495239 4852004 4994710 5137416 5993652 6065005 6421770 6992594 7278006 7492065 8491007 8562360 8990478 9704008 9989420 10488891 10917009 11987304 12130010 12843540 13985188 14556012 14984130 16982014 17481485 17980956 18195015 19978840 20977782 21834018 22476195 24260020 25473021 25687080 27970376 29112024 29968260 31466673 33964028 34962970 35961912 36390030 41955564 42455035 43668036 44952390 48520040 50946042 52444455 54585045 59437049 59936520 62933346 67928056 69925940 72780060 76419063 83911128 84910070 87336072 89904780 101892084 104888910 109170090 118874098 125866692 127365105 139851880 145560120 152838126 157333365 169820140 178311147 179809560 203784168 209777820 218340180 237748196 251733384 254730210 297185245 305676252 314666730 339640280 356622294 382095315 419555640 436680360 475496392 509460420 534933441 594370490 611352504 629333460 713244588 764190630 891555735 1018920840 1069866882 1188740980 1258666920 1426489176 1528381260 1783111470 2139733764 2377481960 2674667205 3056762520 3566222940 4279467528 5349334410 7132445880 10698668820 21397337640
- Sum of all divisors σ(n): 85654768680
- Sum of proper divisors (its aliquot sum) s(n): 64257431040
- 21397337640 is an abundant number, because the sum of its proper divisors (64257431040) is greater than itself. Its abundance is 42860093400
Bases of 21397337640
- Binary: 100111110110110000101110110001010002
- Hexadecimal: 0x4FB617628
- Base-36: 9TVF7E0
Squares and roots of 21397337640
- 21397337640 squared (213973376402) is 457846058080160769600
- 21397337640 cubed (213973376403) is 9796686691884250172613447744000
-
The
square root of 21397337640 is 146278.2883410931 -
The
cube root of 21397337640 is 2776.2159599255
Scales and comparisons
How big is 21397337640?- 21,397,337,640 seconds is equal to 680 years, 19 weeks, 1 day, 8 hours, 54 minutes.
-
To count from 1 to 21,397,337,640 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 21397337640 cubic inches would be around 231.4 feet tall.
Recreational maths with 21397337640
- 21397337640 backwards is 04673379312
- 21397337640 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21397337640's digits is 45
- More coming soon!
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