389642220

Names of 389642220

• Cardinal: 389642220 can be written as Three hundred eighty-nine million, six hundred forty-two thousand, two hundred twenty.

Scientific notation

• Scientific notation: 3.8964222 × 10⁸

Factors of 389642220

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 200

Divisors of 389642220

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 47 53 55 60 66 79 90 94 99 106 110 132 141 158 159 165 180 188 198 212 220 235 237 265 282 316 318 330 395 396 423 470 474 477 495 517 530 564 583 636 660 705 711 790 795 846 869 940 948 954 990 1034 1060 1166 1185 1410 1422 1551 1580 1590 1692 1738 1749 1908 1980 2068 2115 2332 2370 2385 2491 2585 2607 2820 2844 2915 3102 3180 3476 3498 3555 3713 4187 4230 4345 4653 4740 4770 4982 5170 5214 5247 5830 6204 6996 7110 7426 7473 7755 7821 8374 8460 8690 8745 9306 9540 9964 10340 10428 10494 11139 11660 12455 12561 13035 14220 14852 14946 15510 15642 16748 17380 17490 18565 18612 20935 20988 22278 22419 23265 24910 25122 26070 26235 27401 29892 31020 31284 33417 34980 37130 37365 37683 39105 40843 41870 44556 44838 46057 46530 49820 50244 52140 52470 54802 55695 62805 66834 74260 74730 75366 78210 81686 82203 83740 89676 92114 93060 104940 109604 111390 112095 122529 125610 133668 137005 138171 149460 150732 156420 163372 164406 167085 184228 188415 196789 204215 222780 224190 230285 245058 246609 251220 274010 276342 328812 334170 367587 376830 393578 408430 411015 414513 448380 460570 490116 493218 548020 552684 590367 612645 668340 690855 735174 753660 787156 816860 822030 829026 921140 983945 986436 1180734 1225290 1233045 1381710 1470348 1644060 1658052 1771101 1837935 1967890 2072565 2164679 2361468 2450580 2466090 2763420 2951835 3542202 3675870 3935780 4145130 4329358 4932180 5903670 6494037 7084404 7351740 8290260 8658716 8855505 10823395 11807340 12988074 17711010 19482111 21646790 25976148 32470185 35422020 38964222 43293580 64940370 77928444 97410555 129880740 194821110 389642220
• Sum of all divisors σ(n): 1358622720
• Sum of proper divisors (its aliquot sum) s(n): 968980500
• 389642220 is an abundant number, because the sum of its proper divisors (968980500) is greater than itself. Its abundance is 579338280

Bases of 389642220

• Binary: 10111001110010111011111101100₂
• Hexadecimal: 0x173977EC
• Base-36: 6FZDV0

Squares and roots of 389642220

• 389642220 squared (389642220²) is 151821059606528400
• 389642220 cubed (389642220³) is 59155894707840052269048000
• The square root of 389642220 is 19739.3571323891
• The cube root of 389642220 is 730.3908709275

Scales and comparisons

• 389,642,220 seconds is equal to 12 years, 20 weeks, 1 day, 17 hours, 57 minutes.
• To count from 1 to 389,642,220 would take you about eighteen 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 389642220 cubic inches would be around 60.9 feet tall.

Recreational maths with 389642220

• 389642220 backwards is 022246983
• 389642220 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 389642220's digits is 36
• More coming soon!