20189218720

Names of 20189218720

• Cardinal: 20189218720 can be written as Twenty billion, one hundred eighty-nine million, two hundred eighteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.018921872 × 10¹⁰

Factors of 20189218720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 296

Divisors of 20189218720

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 31 32 37 40 44 55 62 73 74 80 88 110 124 137 146 148 155 160 176 185 220 248 274 292 296 310 341 352 365 370 407 440 496 548 584 592 620 682 685 730 740 803 814 880 992 1096 1147 1168 1184 1240 1364 1370 1460 1480 1507 1606 1628 1705 1760 2035 2192 2263 2294 2336 2480 2701 2728 2740 2920 2960 3014 3212 3256 3410 4015 4070 4247 4384 4526 4588 4960 5069 5402 5456 5480 5735 5840 5920 6028 6424 6512 6820 7535 8030 8140 8494 9052 9176 10001 10138 10804 10912 10960 11315 11470 11680 12056 12617 12848 13024 13505 13640 15070 16060 16280 16988 18104 18352 20002 20276 21235 21608 21920 22630 22940 24112 24893 25234 25345 25696 27010 27280 29711 30140 32120 32560 33976 36208 36704 40004 40552 42470 43216 45260 45880 46717 48224 49786 50005 50468 50690 54020 54560 55759 59422 60280 63085 64240 65120 67952 72416 80008 81104 83731 84940 86432 90520 91760 93434 99572 100010 100936 101380 108040 110011 111518 118844 120560 124465 126170 128480 135904 148555 157139 160016 162208 167462 169880 181040 183520 186868 199144 200020 201872 202760 216080 220022 223036 233585 237688 241120 248930 252340 278795 297110 310031 314278 320032 334924 339760 362080 370037 373736 398288 400040 403744 405520 418655 432160 440044 446072 467170 475376 497860 504680 550055 557590 594220 620062 628556 669848 679520 740074 747472 785695 796576 800080 811040 837310 880088 892144 921041 934340 950752 995720 1009360 1100110 1115180 1188440 1240124 1257112 1339696 1480148 1494944 1550155 1571390 1600160 1674620 1728529 1760176 1784288 1842082 1850185 1868680 1991440 2018720 2200220 2230360 2376880 2480248 2514224 2679392 2960296 3100310 3142780 3349240 3410341 3457058 3520352 3684164 3700370 3737360 3982880 4070407 4400440 4460720 4605205 4753760 4960496 5028448 5920592 6200620 6285560 6698480 6820682 6914116 7368328 7400740 7474720 8140814 8642645 8800880 8921440 9210410 9920992 11471147 11841184 12401240 12571120 13396960 13641364 13828232 14736656 14801480 16281628 17051705 17285290 17601760 18420820 20352035 22942294 24802480 25142240 27282728 27656464 29473312 29602960 32563256 34103410 34570580 36841640 40704070 45884588 49604960 54565456 55312928 57355735 59205920 65126512 68206820 69141160 73683280 81408140 91769176 109130912 114711470 126182617 130253024 136413640 138282320 147366560 162816280 183538352 229422940 252365234 272827280 276564640 325632560 367076704 458845880 504730468 545654560 630913085 651265120 917691760 1009460936 1261826170 1835383520 2018921872 2523652340 4037843744 5047304680 10094609360 20189218720
• Sum of all divisors σ(n): 56327104512
• Sum of proper divisors (its aliquot sum) s(n): 36137885792
• 20189218720 is an abundant number, because the sum of its proper divisors (36137885792) is greater than itself. Its abundance is 15948667072

Bases of 20189218720

• Binary: 10010110011010111110000011110100000₂
• Hexadecimal: 0x4B35F07A0
• Base-36: 99W50V4

Squares and roots of 20189218720

• 20189218720 squared (20189218720²) is 407604552523998438400
• 20189218720 cubed (20189218720³) is 8229217462174732521796046848000
• The square root of 20189218720 is 142088.7705626311
• The cube root of 20189218720 is 2722.9510718663

Scales and comparisons

• 20,189,218,720 seconds is equal to 641 years, 49 weeks, 4 days, 12 hours, 18 minutes, 40 seconds.
• To count from 1 to 20,189,218,720 would take you about one thousand, two hundred eighty-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 20189218720 cubic inches would be around 226.9 feet tall.

Recreational maths with 20189218720

• 20189218720 backwards is 02781298102
• 20189218720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20189218720's digits is 40
• More coming soon!