644140063728

Names of 644140063728

• Cardinal: 644140063728 can be written as Six hundred forty-four billion, one hundred forty million, sixty-three thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 6.44140063728 × 10¹¹

Factors of 644140063728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1516

Divisors of 644140063728

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 17 18 21 24 28 34 36 42 48 51 56 63 68 72 84 102 112 119 126 136 144 153 168 204 238 252 272 289 306 336 357 408 476 504 578 612 714 816 867 952 1008 1071 1156 1224 1428 1487 1734 1904 2023 2142 2312 2448 2601 2856 2974 3468 4046 4284 4461 4624 5202 5712 5948 6069 6936 8092 8568 8922 10404 10409 11896 12138 13383 13872 16184 17136 17844 18207 20808 20818 23792 24276 25279 26766 31227 32368 35688 36414 41616 41636 48552 50558 53532 62454 71376 72828 75837 83272 93681 97104 101116 107064 124908 145656 151674 166544 176953 187362 202232 214128 227511 249816 291312 303348 353906 374724 404464 429743 455022 499632 530859 606696 707812 749448 859486 910044 1061718 1213392 1289229 1415624 1498896 1592577 1718972 1820088 2123436 2211169 2578458 2831248 3008201 3185154 3437944 3640176 3867687 4246872 4422338 5156916 6016402 6370308 6633507 6875888 7735374 8493744 8844676 9024603 10313832 12032804 12740616 13267014 15470748 15478183 17689352 18049206 19900521 20627664 24065608 25481232 26534028 27073809 30941496 30956366 35378704 36098412 37589873 39801042 46434549 48131216 53068056 54147618 61882992 61912732 72196824 75179746 79602084 92869098 106136112 108295236 112769619 123825464 139303647 144393648 150359492 159204168 185738196 216590472 225539238 247650928 263129111 278607294 300718984 318408336 338308857 371476392 433180944 451078476 526258222 557214588 601437968 639027841 676617714 742952784 789387333 902156952 1052516444 1114429176 1278055682 1353235428 1578774666 1804313904 1917083523 2105032888 2228858352 2368161999 2556111364 2706470856 3157549332 3834167046 4210065776 4473194887 4736323998 5112222728 5412941712 5751250569 6315098664 7668334092 8946389774 9472647996 10224445456 11502501138 12630197328 13419584661 15336668184 17892779548 18945295992 23005002276 26839169322 30673336368 35785559096 37890591984 40258753983 46010004552 53678338644 71571118192 80517507966 92020009104 107356677288 161035015932 214713354576 322070031864 644140063728
• Sum of all divisors σ(n): 2190017093576
• Sum of proper divisors (its aliquot sum) s(n): 1545877029848
• 644140063728 is an abundant number, because the sum of its proper divisors (1545877029848) is greater than itself. Its abundance is 901736966120

Bases of 644140063728

• Binary: 1001010111111001101111010101101111110000₂
• Hexadecimal: 0x95F9BD5BF0
• Base-36: 87WWD240

Squares and roots of 644140063728

• 644140063728 squared (644140063728²) is 414916421699511901257984
• 644140063728 cubed (644140063728³) is 267264290315317318142812257128804352
• The square root of 644140063728 is 802583.3687088215
• The cube root of 644140063728 is 8636.2811200777

Scales and comparisons

• 644,140,063,728 seconds is equal to 20,481 years, 34 weeks, 2 days, 19 hours, 28 minutes, 48 seconds.
• To count from 1 to 644,140,063,728 would take you about forty thousand, nine hundred sixty-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 644140063728 cubic inches would be around 719.7 feet tall.

Recreational maths with 644140063728

• 644140063728 backwards is 827360041446
• The number of decimal digits it has is: 12
• The sum of 644140063728's digits is 45
• More coming soon!