21287392000

Names of 21287392000

• Cardinal: 21287392000 can be written as Twenty-one billion, two hundred eighty-seven million, three hundred ninety-two thousand.

Scientific notation

• Scientific notation: 2.1287392 × 10¹⁰

Factors of 21287392000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 156

Divisors of 21287392000

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 25 28 29 32 35 40 50 56 58 64 70 80 100 112 113 116 125 128 140 145 160 175 200 203 224 226 232 250 256 280 290 320 350 400 406 448 452 464 500 560 565 580 640 700 725 791 800 812 841 875 896 904 928 1000 1015 1120 1130 1160 1280 1400 1450 1582 1600 1624 1682 1750 1792 1808 1856 2000 2030 2240 2260 2320 2800 2825 2900 3164 3200 3248 3277 3364 3500 3616 3625 3712 3955 4000 4060 4205 4480 4520 4640 5075 5600 5650 5800 5887 6328 6400 6496 6554 6728 7000 7232 7250 7424 7910 8000 8120 8410 8960 9040 9280 10150 11200 11300 11600 11774 12656 12992 13108 13456 14000 14125 14464 14500 15820 16000 16240 16385 16820 18080 18560 19775 20300 21025 22400 22600 22939 23200 23548 25312 25375 25984 26216 26912 28000 28250 28928 29000 29435 31640 32000 32480 32770 33640 36160 37120 39550 40600 42050 44800 45200 45878 46400 47096 50624 50750 51968 52432 53824 56000 56500 58000 58870 63280 64960 65540 67280 72320 79100 81200 81925 84100 90400 91756 92800 94192 95033 98875 101248 101500 104864 105125 107648 112000 113000 114695 116000 117740 126560 129920 131080 134560 144640 147175 158200 162400 163850 168200 180800 183512 185600 188384 190066 197750 202496 203000 209728 210250 215296 224000 226000 229390 232000 235480 253120 259840 262160 269120 294350 316400 324800 327700 336400 361600 367024 376768 380132 395500 406000 409625 419456 420500 452000 458780 464000 470960 475165 506240 524320 538240 573475 588700 632800 649600 655400 665231 672800 723200 734048 735875 753536 760264 791000 812000 819250 838912 841000 904000 917560 928000 941920 950330 1012480 1048640 1076480 1146950 1177400 1265600 1299200 1310800 1330462 1345600 1468096 1471750 1507072 1520528 1582000 1624000 1638500 1682000 1808000 1835120 1883840 1900660 2097280 2293900 2354800 2375825 2531200 2621600 2660924 2691200 2867375 2936192 2943500 3041056 3164000 3248000 3277000 3326155 3364000 3616000 3670240 3767680 3801320 4194560 4587800 4709600 4751650 5062400 5243200 5321848 5382400 5734750 5872384 5887000 6082112 6328000 6496000 6554000 6652310 6728000 7340480 7535360 7602640 9175600 9419200 9503300 10486400 10643696 11469500 11774000 11879125 12164224 12656000 13108000 13304620 13456000 14680960 15205280 16630775 18351200 18838400 19006600 20972800 21287392 22939000 23548000 23758250 24328448 25312000 26216000 26609240 26912000 29361920 30410560 33261550 36702400 37676800 38013200 42574784 45878000 47096000 47516500 52432000 53218480 60821120 66523100 73404800 76026400 83153875 85149568 91756000 94192000 95033000 104864000 106436960 121642240 133046200 146809600 152052800 166307750 170299136 183512000 188384000 190066000 212873920 266092400 304105600 332615500 367024000 380132000 425747840 532184800 608211200 665231000 734048000 760264000 851495680 1064369600 1330462000 1520528000 2128739200 2660924000 3041056000 4257478400 5321848000 10643696000 21287392000
• Sum of all divisors σ(n): 63322564032
• Sum of proper divisors (its aliquot sum) s(n): 42035172032
• 21287392000 is an abundant number, because the sum of its proper divisors (42035172032) is greater than itself. Its abundance is 20747780032

Bases of 21287392000

• Binary: 10011110100110100111101001100000000₂
• Hexadecimal: 0x4F4D3D300
• Base-36: 9S1YOSG

Squares and roots of 21287392000

• 21287392000 squared (21287392000²) is 453153058161664000000
• 21287392000 cubed (21287392000³) is 9646446785086140940288000000000
• The square root of 21287392000 is 145901.9945031595
• The cube root of 21287392000 is 2771.4527952377

Scales and comparisons

• 21,287,392,000 seconds is equal to 676 years, 45 weeks, 2 days, 20 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,287,392,000 would take you about one thousand, three hundred fifty-three 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 21287392000 cubic inches would be around 231 feet tall.

Recreational maths with 21287392000

• 21287392000 backwards is 00029378212
• The number of decimal digits it has is: 11
• The sum of 21287392000's digits is 34
• More coming soon!