18908309420

Names of 18908309420

• Cardinal: 18908309420 can be written as Eighteen billion, nine hundred eight million, three hundred nine thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.890830942 × 10¹⁰

Factors of 18908309420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4576

Divisors of 18908309420

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 10 11 13 14 19 20 22 26 28 35 38 44 52 55 65 70 76 77 91 95 110 121 130 133 140 143 154 182 190 209 220 242 247 260 266 286 308 364 380 385 418 455 484 494 532 572 605 665 715 770 836 847 910 988 1001 1045 1210 1235 1330 1430 1463 1540 1573 1694 1729 1820 2002 2090 2299 2420 2470 2660 2717 2860 2926 3146 3388 3458 4004 4180 4235 4519 4598 4940 5005 5434 5852 6292 6916 7315 7865 8470 8645 9038 9196 10010 10868 11011 11495 13585 14630 15730 16093 16940 17290 18076 19019 20020 22022 22595 22990 27170 29260 29887 31460 31633 32186 34580 38038 44044 45190 45980 49709 54340 55055 58747 59774 63266 64372 76076 80465 85861 90380 95095 99418 110110 117494 119548 126532 149435 158165 160930 171722 190190 198836 209209 220220 234988 248545 293735 298870 316330 321860 343444 347963 380380 411229 418418 429305 497090 546799 587470 597740 601027 632660 646217 695926 822458 836836 858610 944471 994180 1046045 1093598 1116193 1174940 1202054 1292434 1391852 1644916 1717220 1739815 1888942 2056145 2092090 2187196 2232386 2404108 2584868 2733995 3005135 3231085 3479630 3777884 3827593 4112290 4184180 4464772 4523519 4722355 5467990 5580965 6010270 6462170 6611297 6959260 7108387 7655186 7813351 8224580 9047038 9444710 10389181 10935980 11161930 12020540 12278123 12924340 13222594 14216774 15310372 15626702 18094076 18889420 19137965 20778362 22323860 22617595 24556246 26445188 28433548 31253404 33056485 35541935 38275930 39066755 41556724 45235190 49112492 49758709 51945905 61390615 66112970 71083870 72724267 76551860 78133510 85946861 90470380 99517418 103891810 122781230 132225940 135059353 142167740 145448534 156267020 171893722 199034836 207783620 245562460 248793545 270118706 290897068 343787444 363621335 429734305 497587090 540237412 675296765 727242670 859468610 945415471 995174180 1350593530 1454485340 1718937220 1890830942 2701187060 3781661884 4727077355 9454154710 18908309420
• Sum of all divisors σ(n): 56557132800
• Sum of proper divisors (its aliquot sum) s(n): 37648823380
• 18908309420 is an abundant number, because the sum of its proper divisors (37648823380) is greater than itself. Its abundance is 18740513960

Bases of 18908309420

• Binary: 10001100111000001011110011110101100₂
• Hexadecimal: 0x46705E7AC
• Base-36: 8OPIOX8

Squares and roots of 18908309420

• 18908309420 squared (18908309420²) is 357524165122460736400
• 18908309420 cubed (18908309420³) is 6760177539262659795652256888000
• The square root of 18908309420 is 137507.4885960761
• The cube root of 18908309420 is 2664.1023166717

Scales and comparisons

• 18,908,309,420 seconds is equal to 601 years, 11 weeks, 5 days, 4 hours, 10 minutes, 20 seconds.
• To count from 1 to 18,908,309,420 would take you about one thousand, two hundred two 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 18908309420 cubic inches would be around 222 feet tall.

Recreational maths with 18908309420

• 18908309420 backwards is 02490380981
• 18908309420 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18908309420's digits is 44
• More coming soon!