21221342640
21,221,342,640 is an even composite number composed of six prime numbers multiplied together.
What does the number 21221342640 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 240 divisors.
21221342640 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 21221342640:
24 × 32 × 5 × 31 × 373 × 2549
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 31 × 373 × 2549)See below for interesting mathematical facts about the number 21221342640 from the Numbermatics database.
Names of 21221342640
- Cardinal: 21221342640 can be written as Twenty-one billion, two hundred twenty-one million, three hundred forty-two thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.122134264 × 1010
Factors of 21221342640
Divisors of 21221342640
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 36 40 45 48 60 62 72 80 90 93 120 124 144 155 180 186 240 248 279 310 360 372 373 465 496 558 620 720 744 746 930 1116 1119 1240 1395 1488 1492 1860 1865 2232 2238 2480 2549 2790 2984 3357 3720 3730 4464 4476 5098 5580 5595 5968 6714 7440 7460 7647 8952 10196 11160 11190 11563 12745 13428 14920 15294 16785 17904 20392 22320 22380 22941 23126 25490 26856 29840 30588 33570 34689 38235 40784 44760 45882 46252 50980 53712 57815 61176 67140 69378 76470 79019 89520 91764 92504 101960 104067 114705 115630 122352 134280 138756 152940 158038 173445 183528 185008 203920 208134 229410 231260 237057 268560 277512 305880 316076 346890 367056 395095 416268 458820 462520 474114 520335 555024 611760 632152 693780 711171 790190 832536 917640 925040 948228 950777 1040670 1185285 1264304 1387560 1422342 1580380 1665072 1835280 1896456 1901554 2081340 2370570 2775120 2844684 2852331 3160760 3555855 3792912 3803108 4162680 4741140 4753885 5689368 5704662 6321520 7111710 7606216 8325360 8556993 9482280 9507770 11378736 11409324 14223420 14261655 15212432 17113986 18964560 19015540 22818648 28446840 28523310 29474087 34227972 38031080 42784965 45637296 56893680 57046620 58948174 68455944 76062160 85569930 88422261 114093240 117896348 136911888 147370435 171139860 176844522 228186480 235792696 265266783 294740870 342279720 353689044 442111305 471585392 530533566 589481740 684559440 707378088 884222610 1061067132 1178963480 1326333915 1414756176 1768445220 2122134264 2357926960 2652667830 3536890440 4244268528 5305335660 7073780880 10610671320 21221342640
- Sum of all divisors σ(n): 73793491200
- Sum of proper divisors (its aliquot sum) s(n): 52572148560
- 21221342640 is an abundant number, because the sum of its proper divisors (52572148560) is greater than itself. Its abundance is 31350805920
Bases of 21221342640
- Binary: 100111100001110001111111101101100002
- Hexadecimal: 0x4F0E3FDB0
- Base-36: 9QYN0S0
Squares and roots of 21221342640
- 21221342640 squared (212213426402) is 450345383444282169600
- 21221342640 cubed (212213426403) is 9556933688413295269924191744000
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The
square root of 21221342640 is 145675.4702755409 -
The
cube root of 21221342640 is 2768.5834546691
Scales and comparisons
How big is 21221342640?- 21,221,342,640 seconds is equal to 674 years, 40 weeks, 1 day, 9 hours, 24 minutes.
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To count from 1 to 21,221,342,640 would take you about one thousand, three hundred forty-nine 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 21221342640 cubic inches would be around 230.7 feet tall.
Recreational maths with 21221342640
- 21221342640 backwards is 04624312212
- The number of decimal digits it has is: 11
- The sum of 21221342640's digits is 27
- More coming soon!
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