28157327280

Names of 28157327280

• Cardinal: 28157327280 can be written as Twenty-eight billion, one hundred fifty-seven million, three hundred twenty-seven thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.815732728 × 10¹⁰

Factors of 28157327280

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1172

Divisors of 28157327280

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 29 30 31 36 40 41 45 48 58 60 62 72 80 82 87 90 93 116 120 123 124 144 145 155 164 174 180 186 205 232 240 246 248 261 279 290 310 328 348 360 369 372 410 435 464 465 492 496 522 558 580 615 620 656 696 720 738 744 820 870 899 930 984 1044 1061 1116 1160 1189 1230 1240 1271 1305 1392 1395 1476 1488 1640 1740 1798 1845 1860 1968 2088 2122 2232 2320 2378 2460 2480 2542 2610 2697 2790 2952 3183 3280 3480 3567 3596 3690 3720 3813 4176 4244 4464 4495 4756 4920 5084 5220 5305 5394 5580 5904 5945 6355 6366 6960 7134 7192 7380 7440 7626 8091 8488 8990 9512 9549 9840 10168 10440 10610 10701 10788 11160 11439 11890 12710 12732 13485 14268 14384 14760 15252 15915 16182 16976 17835 17980 19024 19065 19098 20336 20880 21220 21402 21576 22320 22878 23780 25420 25464 26970 28536 29520 30504 30769 31830 32364 32891 35670 35960 36859 38130 38196 40455 42440 42804 43152 43501 45756 47560 47745 50840 50928 53505 53940 57072 57195 61008 61538 63660 64728 65782 71340 71920 73718 76260 76392 80910 84880 85608 87002 91512 92307 95120 95490 98673 101680 107010 107880 110577 114390 123076 127320 129456 130503 131564 142680 147436 152520 152784 153845 161820 164455 171216 174004 183024 184295 184614 190980 197346 214020 215760 217505 221154 228780 246152 254640 261006 263128 276921 285360 294872 296019 305040 307690 323640 328910 331731 348008 368590 369228 381960 391509 394692 428040 435010 442308 457560 461535 492304 493365 522012 526256 552885 553842 589744 592038 615380 647280 652515 657820 663462 696016 737180 738456 763920 783018 789384 856080 870020 884616 915120 923070 953839 986730 1044024 1105770 1107684 1184076 1230760 1261529 1305030 1315640 1326924 1348531 1384605 1474360 1476912 1480095 1566036 1578768 1658655 1740040 1769232 1846140 1907678 1957545 1973460 2088048 2211540 2215368 2368152 2461520 2523058 2610060 2631280 2653848 2697062 2769210 2861517 2948720 2960190 3132072 3317310 3480080 3692280 3784587 3815356 3915090 3946920 4045593 4423080 4430736 4736304 4769195 5046116 5220120 5307696 5394124 5538420 5723034 5920380 6264144 6307645 6634620 6742655 7384560 7569174 7630712 7830180 7893840 8091186 8584551 8846160 9538390 10092232 10440240 10788248 11076840 11353761 11446068 11840760 12136779 12615290 13269240 13485310 14307585 15138348 15261424 15660360 16182372 17169102 18922935 19076780 20184464 20227965 21576496 22153680 22707522 22892136 23681520 24273558 25230580 26538480 26970620 28615170 30276696 31320720 32364744 34338204 37845870 38153560 39107399 40455930 42922755 45415044 45784272 48547116 50461160 53941240 56768805 57230340 60553392 60683895 64729488 68676408 75691740 76307120 78214798 80911860 85845510 90830088 97094232 100922320 107882480 113537610 114460680 117322197 121367790 137352816 151383480 156429596 161823720 171691020 181660176 194188464 195536995 227075220 228921360 234644394 242735580 302766960 312859192 323647440 343382040 351966591 391073990 454150440 469288788 485471160 586610985 625718384 686764080 703933182 782147980 908300880 938577576 970942320 1173221970 1407866364 1564295960 1759832955 1877155152 2346443940 2815732728 3128591920 3519665910 4692887880 5631465456 7039331820 9385775760 14078663640 28157327280
• Sum of all divisors σ(n): 103538373120
• Sum of proper divisors (its aliquot sum) s(n): 75381045840
• 28157327280 is an abundant number, because the sum of its proper divisors (75381045840) is greater than itself. Its abundance is 47223718560

Bases of 28157327280

• Binary: 11010001110010011101011011110110000₂
• Hexadecimal: 0x68E4EB7B0
• Base-36: CXO58S0

Squares and roots of 28157327280

• 28157327280 squared (28157327280²) is 792835079553032198400
• 28157327280 cubed (28157327280³) is 22324116814039563726726692352000
• The square root of 28157327280 is 167801.4519603451
• The cube root of 28157327280 is 3042.2657134133

Scales and comparisons

• 28,157,327,280 seconds is equal to 895 years, 16 weeks, 2 days, 23 hours, 48 minutes.
• To count from 1 to 28,157,327,280 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 28157327280 cubic inches would be around 253.5 feet tall.

Recreational maths with 28157327280

• 28157327280 backwards is 08272375182
• 28157327280 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28157327280's digits is 45
• More coming soon!