128998808730

Names of 128998808730

• Cardinal: 128998808730 can be written as One hundred twenty-eight billion, nine hundred ninety-eight million, eight hundred eight thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 1.2899880873 × 10¹¹

Factors of 128998808730

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 579

Divisors of 128998808730

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 9 10 11 15 18 22 30 33 37 45 55 66 71 74 90 99 110 111 142 165 185 193 198 213 222 257 330 333 355 370 386 407 426 495 514 555 579 639 666 710 771 781 814 965 990 1065 1110 1158 1221 1278 1285 1542 1562 1665 1737 1930 2035 2123 2130 2313 2343 2442 2570 2627 2827 2895 3195 3330 3474 3663 3855 3905 4070 4246 4626 4686 5254 5654 5790 6105 6369 6390 7029 7141 7326 7710 7810 7881 8481 8685 9509 10615 11565 11715 12210 12738 13135 13703 14058 14135 14282 15762 16962 17370 18247 18315 19018 19107 21230 21423 23130 23430 23643 25443 26270 27406 28270 28527 28897 31845 35145 35705 36494 36630 38214 39405 41109 42405 42846 47286 47545 49601 50886 54741 57054 57794 63690 64269 68515 70290 71410 78551 78810 82218 84810 85581 86691 91235 95090 95535 99202 104599 107115 109482 118215 123327 127215 128538 137030 142635 144485 148803 150733 157102 164223 171162 173382 182470 191070 200717 205545 209198 214230 235653 236430 246654 248005 254430 260073 273705 285270 288970 297606 301466 313797 321345 328446 392755 401434 411090 427905 433455 446409 452199 471306 496010 507011 520146 522995 545611 547410 602151 616635 627594 642690 675139 706959 744015 753665 785510 821115 855810 866910 892818 904398 941391 1003585 1014022 1045990 1091222 1178265 1204302 1233270 1300365 1350278 1356597 1413918 1488030 1507330 1521033 1568985 1636833 1642230 1806453 1835237 1882782 2007170 2025417 2232045 2260995 2356530 2535055 2600730 2713194 2728055 3010755 3042066 3137970 3273666 3375695 3521671 3534795 3612906 3670474 4050834 4464090 4521990 4563099 4706955 4910499 5070110 5456110 5505711 5577121 6021510 6076251 6751390 6782985 7043342 7069590 7426529 7605165 8184165 9032265 9126198 9176185 9413910 9820998 10127085 10565013 11011422 11154242 12152502 13565970 14853058 15210330 16368330 16517133 16731363 17608355 18064530 18352370 20187607 20254170 21130026 22279587 22815495 24552495 27528555 27885605 30381255 31695039 33034266 33462726 35216710 37132645 38738381 40375214 44559174 45630990 49104990 50194089 52825065 55057110 55771210 60562821 60762510 63390078 66838761 74265290 77476762 82585665 83656815 100388178 100938035 105650130 111397935 116215143 121125642 130301827 133677522 158475195 165171330 167313630 181688463 193691905 201876070 222795870 232430286 250970445 260603654 302814105 316950390 334193805 348645429 363376926 387383810 390905481 501940890 581075715 605628210 651509135 668387610 697290858 781810962 908442315 1162151430 1172716443 1303018270 1433320097 1743227145 1816884630 1954527405 2345432886 2866640194 3486454290 3909054810 4299960291 5863582215 7166600485 8599920582 11727164430 12899880873 14333200970 21499801455 25799761746 42999602910 64499404365 128998808730
• Sum of all divisors σ(n): 384533899776
• Sum of proper divisors (its aliquot sum) s(n): 255535091046
• 128998808730 is an abundant number, because the sum of its proper divisors (255535091046) is greater than itself. Its abundance is 126536282316

Bases of 128998808730

• Binary: 1111000001000111011011001110010011010₂
• Hexadecimal: 0x1E08ED9C9A
• Base-36: 1N9EK5UI

Squares and roots of 128998808730

• 128998808730 squared (128998808730²) is 16640692653759124212900
• 128998808730 cubed (128998808730³) is 2146629528776989379832198898617000
• The square root of 128998808730 is 359164.0415325565
• The cube root of 128998808730 is 5052.7587936245

Scales and comparisons

• 128,998,808,730 seconds is equal to 4,101 years, 39 weeks, 4 days, 18 hours, 25 minutes, 30 seconds.
• To count from 1 to 128,998,808,730 would take you about eight thousand, two 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 128998808730 cubic inches would be around 421.1 feet tall.

Recreational maths with 128998808730

• 128998808730 backwards is 037808899821
• The number of decimal digits it has is: 12
• The sum of 128998808730's digits is 63
• More coming soon!