12988781388

Names of 12988781388

• Cardinal: 12988781388 can be written as Twelve billion, nine hundred eighty-eight million, seven hundred eighty-one thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 1.2988781388 × 10¹⁰

Factors of 12988781388

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 744

Divisors of 12988781388

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 9 11 12 17 18 22 31 33 34 36 44 51 62 66 68 93 99 102 109 124 132 153 186 187 198 204 218 279 306 327 341 372 374 396 436 527 558 561 571 612 654 682 748 981 1023 1054 1116 1122 1142 1199 1308 1364 1581 1683 1713 1853 1962 2046 2108 2244 2284 2398 3069 3162 3366 3379 3426 3597 3706 3924 4092 4743 4796 5139 5559 5797 6138 6281 6324 6732 6758 6852 7194 7412 9486 9707 10137 10278 10791 11118 11594 12276 12562 13516 14388 16677 17391 17701 18843 18972 19414 20274 20383 20556 21582 22236 23188 25124 29121 30411 33354 34782 35402 37169 37686 38828 40548 40766 43164 52173 53103 56529 57443 58242 60822 61149 62239 66708 69564 70804 74338 75372 81532 87363 104346 106206 106777 111507 113058 114886 116484 121644 122298 124478 148676 159309 172329 174726 183447 186717 194711 208692 212412 213554 223014 226116 229772 244596 248956 300917 318618 320331 334521 344658 349452 366894 373434 389422 427108 446028 516987 560151 584133 601834 631873 637236 640662 669042 684629 689316 733788 746868 778844 902751 960993 1033974 1058063 1120302 1168266 1203668 1263746 1281324 1338084 1369258 1752399 1805502 1895619 1921986 1929409 2053887 2067948 2116126 2240604 2336532 2527492 2708253 2738516 3174189 3310087 3504798 3611004 3791238 3843972 3858818 4107774 4232252 5416506 5686857 5788227 6161661 6348378 6620174 7009596 7582476 7717636 8215548 9522567 9930261 10833012 11373714 11576454 11638693 12323322 12696756 13240348 17364681 19045134 19860522 21223499 22747428 23152908 23277386 24646644 29790783 32799953 34729362 34916079 38090268 39721044 42446998 46554772 59581566 63670497 65599906 69458724 69832158 84893996 98399859 104748237 119163132 127340994 131199812 139664316 191011491 196799718 209496474 254681988 295199577 360799483 382022982 393599436 418992948 590399154 721598966 764045964 1082398449 1180798308 1443197932 2164796898 3247195347 4329593796 6494390694 12988781388
• Sum of all divisors σ(n): 39576176640
• Sum of proper divisors (its aliquot sum) s(n): 26587395252
• 12988781388 is an abundant number, because the sum of its proper divisors (26587395252) is greater than itself. Its abundance is 13598613864

Bases of 12988781388

• Binary: 1100000110001100010001001101001100₂
• Hexadecimal: 0x30631134C
• Base-36: 5YT6NV0

Squares and roots of 12988781388

• 12988781388 squared (12988781388²) is 168708441945255206544
• 12988781388 cubed (12988781388³) is 2191317070737009341668803003072
• The square root of 12988781388 is 113968.3350233741
• The cube root of 12988781388 is 2350.6581158439

Scales and comparisons

• 12,988,781,388 seconds is equal to 413 years, 1 day, 2 hours, 49 minutes, 48 seconds.
• To count from 1 to 12,988,781,388 would take you about eight hundred twenty-six 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 12988781388 cubic inches would be around 195.9 feet tall.

Recreational maths with 12988781388

• 12988781388 backwards is 88318788921
• The number of decimal digits it has is: 11
• The sum of 12988781388's digits is 63
• More coming soon!