21381103440

Names of 21381103440

• Cardinal: 21381103440 can be written as Twenty-one billion, three hundred eighty-one million, one hundred three thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.138110344 × 10¹⁰

Factors of 21381103440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2068

Divisors of 21381103440

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 135 144 162 180 197 216 240 243 270 324 360 394 405 432 486 540 591 648 720 729 788 810 972 985 1080 1182 1215 1296 1458 1576 1620 1773 1861 1944 1970 2160 2364 2430 2916 2955 3152 3240 3546 3645 3722 3888 3940 4728 4860 5319 5583 5832 5910 6480 7092 7290 7444 7880 8865 9305 9456 9720 10638 11166 11664 11820 14184 14580 14888 15760 15957 16749 17730 18610 19440 21276 22332 23640 26595 27915 28368 29160 29776 31914 33498 35460 37220 42552 44664 47280 47871 50247 53190 55830 58320 63828 66996 70920 74440 79785 83745 85104 89328 95742 100494 106380 111660 127656 133992 141840 143613 148880 150741 159570 167490 191484 200988 212760 223320 239355 251235 255312 267984 287226 301482 319140 334980 366617 382968 401976 425520 446640 452223 478710 502470 574452 602964 638280 669960 718065 733234 753705 765936 803952 904446 957420 1004940 1099851 1148904 1205928 1276560 1339920 1356669 1436130 1466468 1507410 1808892 1833085 1914840 2009880 2199702 2261115 2297808 2411856 2713338 2872260 2932936 3014820 3299553 3617784 3666170 3829680 4019760 4399404 4522230 5426676 5499255 5744520 5865872 6029640 6599106 6783345 7235568 7332340 8798808 9044460 9898659 10853352 10998510 11489040 12059280 13198212 13566690 14664680 16497765 17597616 18088920 19797318 21706704 21997020 26396424 27133380 29329360 29695977 32995530 36177840 39594636 43994040 49493295 52792848 54266760 59391954 65991060 79189272 87988080 89087931 98986590 108533520 118783908 131982120 148479885 158378544 178175862 197973180 237567816 263964240 267263793 296959770 356351724 395946360 445439655 475135632 534527586 593919540 712703448 791892720 890879310 1069055172 1187839080 1336318965 1425406896 1781758620 2138110344 2375678160 2672637930 3563517240 4276220688 5345275860 7127034480 10690551720 21381103440
• Sum of all divisors σ(n): 74951093448
• Sum of proper divisors (its aliquot sum) s(n): 53569990008
• 21381103440 is an abundant number, because the sum of its proper divisors (53569990008) is greater than itself. Its abundance is 32188886568

Bases of 21381103440

• Binary: 10011111010011010011011111101010000₂
• Hexadecimal: 0x4FA69BF50
• Base-36: 9TLR900

Squares and roots of 21381103440

• 21381103440 squared (21381103440²) is 457151584311979833600
• 21381103440 cubed (21381103440³) is 9774405311934322053395587584000
• The square root of 21381103440 is 146222.7870066769
• The cube root of 21381103440 is 2775.5136755441

Scales and comparisons

• 21,381,103,440 seconds is equal to 679 years, 44 weeks, 2 days, 11 hours, 24 minutes.
• To count from 1 to 21,381,103,440 would take you about one thousand, three hundred fifty-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 21381103440 cubic inches would be around 231.3 feet tall.

Recreational maths with 21381103440

• 21381103440 backwards is 04430118312
• 21381103440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21381103440's digits is 27
• More coming soon!