1621638144

Names of 1621638144

• Cardinal: 1621638144 can be written as One billion, six hundred twenty-one million, six hundred thirty-eight thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 1.621638144 × 10⁹

Factors of 1621638144

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 31

Divisors of 1621638144

• Number of divisors d(n): 528
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 27 28 32 36 38 42 48 49 54 56 57 63 64 72 76 81 84 96 98 108 112 114 126 128 133 144 147 152 162 168 171 189 192 196 216 224 228 243 252 256 266 288 294 304 324 336 342 343 378 384 392 399 432 441 448 456 486 504 512 513 532 567 576 588 608 648 672 684 686 756 768 784 798 864 882 896 912 931 972 1008 1024 1026 1029 1064 1134 1152 1176 1197 1216 1296 1323 1344 1368 1372 1512 1536 1539 1568 1596 1701 1728 1764 1792 1824 1862 1944 2016 2052 2058 2128 2268 2304 2352 2394 2432 2592 2646 2688 2736 2744 2793 3024 3072 3078 3087 3136 3192 3402 3456 3528 3584 3591 3648 3724 3888 3969 4032 4104 4116 4256 4536 4608 4617 4704 4788 4864 5184 5292 5376 5472 5488 5586 6048 6156 6174 6272 6384 6517 6804 6912 7056 7168 7182 7296 7448 7776 7938 8064 8208 8232 8379 8512 9072 9216 9234 9261 9408 9576 9728 10368 10584 10752 10773 10944 10976 11172 11907 12096 12312 12348 12544 12768 13034 13608 13824 14112 14364 14592 14896 15552 15876 16128 16416 16464 16758 17024 18144 18468 18522 18816 19152 19456 19551 20736 21168 21504 21546 21888 21952 22344 23814 24192 24624 24696 25088 25137 25536 26068 27216 27648 27783 28224 28728 29184 29792 31104 31752 32256 32319 32832 32928 33516 34048 36288 36936 37044 37632 38304 39102 41472 42336 43092 43776 43904 44688 47628 48384 49248 49392 50176 50274 51072 52136 54432 55566 56448 57456 58368 58653 59584 62208 63504 64512 64638 65664 65856 67032 68096 72576 73872 74088 75264 75411 76608 78204 82944 83349 84672 86184 87552 87808 89376 95256 96768 98496 98784 100548 102144 104272 108864 111132 112896 114912 117306 119168 124416 127008 129276 131328 131712 134064 136192 145152 147744 148176 150528 150822 153216 156408 166698 169344 172368 175104 175616 175959 178752 190512 193536 196992 197568 201096 204288 208544 217728 222264 225792 226233 229824 234612 238336 248832 254016 258552 262656 263424 268128 290304 295488 296352 301644 306432 312816 333396 338688 344736 351232 351918 357504 381024 393984 395136 402192 408576 417088 435456 444528 451584 452466 459648 469224 476672 508032 517104 525312 526848 527877 536256 580608 590976 592704 603288 612864 625632 666792 677376 689472 703836 715008 762048 787968 790272 804384 834176 870912 889056 904932 919296 938448 953344 1016064 1034208 1053696 1055754 1072512 1181952 1185408 1206576 1225728 1251264 1333584 1354752 1378944 1407672 1430016 1524096 1575936 1580544 1583631 1608768 1668352 1741824 1778112 1809864 1838592 1876896 2032128 2068416 2111508 2145024 2363904 2370816 2413152 2502528 2667168 2757888 2815344 2860032 3048192 3161088 3167262 3217536 3336704 3556224 3619728 3677184 3753792 4064256 4136832 4223016 4290048 4727808 4741632 4826304 5005056 5334336 5515776 5630688 6096384 6334524 6435072 6673408 7112448 7239456 7507584 8273664 8446032 8580096 9483264 9652608 10010112 10668672 11031552 11261376 12192768 12669048 12870144 14224896 14478912 15015168 16547328 16892064 19305216 20020224 21337344 22522752 25338096 25740288 28449792 28957824 30030336 33094656 33784128 38610432 42674688 45045504 50676192 57915648 60060672 67568256 77220864 85349376 90091008 101352384 115831296 135136512 180182016 202704768 231662592 270273024 405409536 540546048 810819072 1621638144
• Sum of all divisors σ(n): 5960864000
• Sum of proper divisors (its aliquot sum) s(n): 4339225856
• 1621638144 is an abundant number, because the sum of its proper divisors (4339225856) is greater than itself. Its abundance is 2717587712

Bases of 1621638144

• Binary: 1100000101010000011110000000000₂
• Hexadecimal: 0x60A83C00
• Base-36: QTHC00

Squares and roots of 1621638144

• 1621638144 squared (1621638144²) is 2629710270075764736
• 1621638144 cubed (1621638144³) is 4264438481623401865867689984
• The square root of 1621638144 is 40269.5684605635
• The cube root of 1621638144 is 1174.8560304063

Scales and comparisons

• 1,621,638,144 seconds is equal to 51 years, 29 weeks, 1 day, 23 hours, 2 minutes, 24 seconds.
• To count from 1 to 1,621,638,144 would take you about one hundred 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 1621638144 cubic inches would be around 97.9 feet tall.

Recreational maths with 1621638144

• 1621638144 backwards is 4418361261
• 1621638144 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1621638144's digits is 36
• More coming soon!