21221990400

Names of 21221990400

• Cardinal: 21221990400 can be written as Twenty-one billion, two hundred twenty-one million, nine hundred ninety thousand, four hundred.

Scientific notation

• Scientific notation: 2.12219904 × 10¹⁰

Factors of 21221990400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 2680

Divisors of 21221990400

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 25 26 30 32 39 40 48 50 52 60 64 65 75 78 80 96 100 104 120 128 130 150 156 160 192 195 200 208 240 256 260 300 312 320 325 384 390 400 416 480 512 520 600 624 640 650 768 780 800 832 960 975 1024 1040 1200 1248 1280 1300 1536 1560 1600 1664 1920 1950 2048 2080 2400 2496 2560 2600 2657 3072 3120 3200 3328 3840 3900 4096 4160 4800 4992 5120 5200 5314 6144 6240 6400 6656 7680 7800 7971 8192 8320 9600 9984 10240 10400 10628 12288 12480 12800 13285 13312 15360 15600 15942 16640 19200 19968 20480 20800 21256 24576 24960 25600 26570 26624 30720 31200 31884 33280 34541 38400 39855 39936 40960 41600 42512 49920 51200 53140 53248 61440 62400 63768 66425 66560 69082 76800 79710 79872 83200 85024 99840 102400 103623 106280 106496 122880 124800 127536 132850 133120 138164 153600 159420 159744 166400 170048 172705 199275 199680 204800 207246 212560 249600 255072 265700 266240 276328 307200 318840 319488 332800 340096 345410 398550 399360 414492 425120 499200 510144 518115 531400 532480 552656 614400 637680 665600 680192 690820 797100 798720 828984 850240 863525 998400 1020288 1036230 1062800 1105312 1275360 1331200 1360384 1381640 1594200 1597440 1657968 1700480 1727050 1996800 2040576 2072460 2125600 2210624 2550720 2590575 2662400 2720768 2763280 3188400 3315936 3400960 3454100 3993600 4081152 4144920 4251200 4421248 5101440 5181150 5441536 5526560 6376800 6631872 6801920 6908200 7987200 8162304 8289840 8502400 8842496 10202880 10362300 10883072 11053120 12753600 13263744 13603840 13816400 16324608 16579680 17004800 17684992 20405760 20724600 21766144 22106240 25507200 26527488 27207680 27632800 32649216 33159360 34009600 35369984 40811520 41449200 44212480 51014400 53054976 54415360 55265600 65298432 66318720 68019200 70739968 81623040 82898400 88424960 102028800 106109952 108830720 110531200 132637440 136038400 141479936 163246080 165796800 176849920 204057600 212219904 221062400 265274880 272076800 282959872 326492160 331593600 353699840 408115200 424439808 442124800 530549760 544153600 663187200 707399680 816230400 848879616 884249600 1061099520 1326374400 1414799360 1632460800 1768499200 2122199040 2652748800 3536998400 4244398080 5305497600 7073996800 10610995200 21221990400
• Sum of all divisors σ(n): 75595880304
• Sum of proper divisors (its aliquot sum) s(n): 54373889904
• 21221990400 is an abundant number, because the sum of its proper divisors (54373889904) is greater than itself. Its abundance is 33151899504

Bases of 21221990400

• Binary: 10011110000111011011110000000000000₂
• Hexadecimal: 0x4F0EDE000
• Base-36: 9QZ0WLC

Squares and roots of 21221990400

• 21221990400 squared (21221990400²) is 450372876537692160000
• 21221990400 cubed (21221990400³) is 9557808862303288257675264000000
• The square root of 21221990400 is 145677.6935567007
• The cube root of 21221990400 is 2768.6116237849

Scales and comparisons

• 21,221,990,400 seconds is equal to 674 years, 41 weeks, 1 day, 21 hours, 20 minutes.
• To count from 1 to 21,221,990,400 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 21221990400 cubic inches would be around 230.7 feet tall.

Recreational maths with 21221990400

• 21221990400 backwards is 00409912212
• 21221990400 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21221990400's digits is 30
• More coming soon!