28147436720

Names of 28147436720

• Cardinal: 28147436720 can be written as Twenty-eight billion, one hundred forty-seven million, four hundred thirty-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.814743672 × 10¹⁰

Factors of 28147436720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 244

Divisors of 28147436720

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 40 52 65 80 97 104 127 130 169 194 208 254 260 338 388 485 508 520 635 676 776 845 970 1016 1040 1261 1270 1352 1552 1651 1690 1940 2032 2197 2522 2540 2704 3302 3380 3880 4394 5044 5080 6305 6604 6760 7760 8255 8788 10088 10160 10985 12319 12610 13208 13520 16393 16510 17576 20176 21463 21970 24638 25220 26416 28561 32786 33020 35152 42926 43940 49276 50440 57122 61595 65572 66040 81965 85852 87880 98552 100880 107315 114244 123190 131144 132080 142805 160147 163930 171704 175760 197104 213109 214630 228488 246380 262288 279019 285610 320294 327860 343408 426218 429260 456976 492760 558038 571220 640588 655720 800735 852436 858520 985520 1065545 1116076 1142440 1281176 1311440 1395095 1601470 1704872 1717040 2081911 2131090 2232152 2284880 2562352 2770417 2790190 3202940 3409744 3627247 4163822 4262180 4464304 5540834 5580380 6405880 7254494 8327644 8524360 10409555 11081668 11160760 12811760 13852085 14508988 16655288 17048720 18136235 20819110 22163336 22321520 27064843 27704170 29017976 33310576 36272470 41638220 44326672 54129686 55408340 58035952 72544940 83276440 108259372 110816680 135324215 145089880 166552880 216518744 221633360 270648430 290179760 351842959 433037488 541296860 703685918 1082593720 1407371836 1759214795 2165187440 2814743672 3518429590 5629487344 7036859180 14073718360 28147436720
• Sum of all divisors σ(n): 72191046144
• Sum of proper divisors (its aliquot sum) s(n): 44043609424
• 28147436720 is an abundant number, because the sum of its proper divisors (44043609424) is greater than itself. Its abundance is 15896172704

Bases of 28147436720

• Binary: 11010001101101101111100110010110000₂
• Hexadecimal: 0x68DB7CCB0
• Base-36: CXI9968

Squares and roots of 28147436720

• 28147436720 squared (28147436720²) is 792278193906404358400
• 28147436720 cubed (28147436720³) is 22300600327616406280796200448000
• The square root of 28147436720 is 167771.9783515709
• The cube root of 28147436720 is 3041.9094623259

Scales and comparisons

• 28,147,436,720 seconds is equal to 895 years, 12 hours, 25 minutes, 20 seconds.
• To count from 1 to 28,147,436,720 would take you about one thousand, seven hundred ninety 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 28147436720 cubic inches would be around 253.5 feet tall.

Recreational maths with 28147436720

• 28147436720 backwards is 02763474182
• The number of decimal digits it has is: 11
• The sum of 28147436720's digits is 44
• More coming soon!