21491799040
21,491,799,040 is an even composite number composed of six prime numbers multiplied together.
21491799040 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred fifty-two divisors.
Prime factorization of 21491799040:
210 × 5 × 31 × 43 × 47 × 67
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 31 × 43 × 47 × 67)See below for interesting mathematical facts about the number 21491799040 from the Numbermatics database.
Names of 21491799040
- Cardinal: 21491799040 can be written as Twenty-one billion, four hundred ninety-one million, seven hundred ninety-nine thousand and forty.
Scientific notation
- Scientific notation: 2.149179904 × 1010
Factors of 21491799040
Divisors of 21491799040
- Number of divisors d(n): 352
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Complete list of divisors:
1 2 4 5 8 10 16 20 31 32 40 43 47 62 64 67 80 86 94 124 128 134 155 160 172 188 215 235 248 256 268 310 320 335 344 376 430 470 496 512 536 620 640 670 688 752 860 940 992 1024 1072 1240 1280 1333 1340 1376 1457 1504 1720 1880 1984 2021 2077 2144 2480 2560 2666 2680 2752 2881 2914 3008 3149 3440 3760 3968 4042 4154 4288 4960 5120 5332 5360 5504 5762 5828 6016 6298 6665 6880 7285 7520 7936 8084 8308 8576 9920 10105 10385 10664 10720 11008 11524 11656 12032 12596 13330 13760 14405 14570 15040 15745 15872 16168 16616 17152 19840 20210 20770 21328 21440 22016 23048 23312 24064 25192 26660 27520 28810 29140 30080 31490 31744 32336 33232 34304 39680 40420 41540 42656 42880 44032 46096 46624 48128 50384 53320 55040 57620 58280 60160 62651 62980 64672 66464 68608 79360 80840 83080 85312 85760 89311 92192 93248 97619 100768 106640 110080 115240 116560 120320 125302 125960 129344 132928 135407 158720 161680 166160 170624 171520 178622 184384 186496 195238 201536 213280 220160 230480 233120 240640 250604 251920 258688 265856 270814 313255 323360 332320 341248 343040 357244 368768 372992 390476 403072 426560 446555 460960 466240 488095 501208 503840 517376 531712 541628 626510 646720 664640 677035 682496 714488 737536 745984 780952 806144 853120 893110 921920 932480 976190 1002416 1007680 1034752 1063424 1083256 1253020 1293440 1329280 1354070 1364992 1428976 1475072 1491968 1561904 1612288 1706240 1786220 1843840 1864960 1952380 2004832 2015360 2069504 2126848 2166512 2506040 2586880 2658560 2708140 2857952 2950144 3123808 3224576 3412480 3572440 3687680 3729920 3904760 4009664 4030720 4197617 4333024 5012080 5173760 5317120 5416280 5715904 6247616 6824960 7144880 7375360 7459840 7809520 8019328 8061440 8395234 8666048 10024160 10347520 10634240 10832560 11431808 12495232 14289760 14750720 15619040 16038656 16122880 16790468 17332096 20048320 20988085 21665120 22863616 24990464 28579520 31238080 32077312 33580936 34664192 40096640 41976170 43330240 45727232 49980928 57159040 62476160 64154624 67161872 69328384 80193280 83952340 86660480 91454464 99961856 114318080 124952320 134323744 138656768 160386560 167904680 173320960 228636160 249904640 268647488 320773120 335809360 346641920 457272320 499809280 537294976 671618720 693283840 1074589952 1343237440 2149179904 2686474880 4298359808 5372949760 10745899520 21491799040
- Sum of all divisors σ(n): 56444534784
- Sum of proper divisors (its aliquot sum) s(n): 34952735744
- 21491799040 is an abundant number, because the sum of its proper divisors (34952735744) is greater than itself. Its abundance is 13460936704
Bases of 21491799040
- Binary: 101000000010000001011010100000000002
- Hexadecimal: 0x50102D400
- Base-36: 9VFNU9S
Squares and roots of 21491799040
- 21491799040 squared (214917990402) is 461897425975744921600
- 21491799040 cubed (214917990403) is 9927006656163985769327755264000
-
The
square root of 21491799040 is 146600.8152774057 -
The
cube root of 21491799040 is 2780.2952880617
Scales and comparisons
How big is 21491799040?- 21,491,799,040 seconds is equal to 683 years, 19 weeks, 2 days, 16 hours, 10 minutes, 40 seconds.
-
To count from 1 to 21,491,799,040 would take you about one thousand, three hundred sixty-six 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 21491799040 cubic inches would be around 231.7 feet tall.
Recreational maths with 21491799040
- 21491799040 backwards is 04099719412
- The number of decimal digits it has is: 11
- The sum of 21491799040's digits is 46
- More coming soon!
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