28728127440

Names of 28728127440

• Cardinal: 28728127440 can be written as Twenty-eight billion, seven hundred twenty-eight million, one hundred twenty-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.872812744 × 10¹⁰

Factors of 28728127440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 7184

Divisors of 28728127440

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 135 144 162 180 216 240 270 324 360 405 432 540 648 683 720 810 1080 1296 1366 1620 2049 2160 2732 3240 3415 4098 5464 6147 6480 6491 6830 8196 10245 10928 12294 12982 13660 16392 18441 19473 20490 24588 25964 27320 30735 32455 32784 36882 38946 40980 49176 51928 54640 55323 58419 61470 64910 73764 77892 81960 92205 97365 98352 103856 110646 116838 122940 129820 147528 155784 163920 175257 184410 194730 221292 233676 245880 259640 276615 292095 295056 311568 350514 368820 389460 442584 467352 491760 519280 525771 553230 584190 701028 737640 778920 876285 885168 934704 1051542 1106460 1168380 1402056 1475280 1557840 1752570 2103084 2212920 2336760 2628855 2804112 3505140 4206168 4425840 4433353 4673520 5257710 7010280 8412336 8866706 10515420 13300059 14020560 17733412 21030840 22166765 26600118 35466824 39900177 42061680 44333530 53200236 66500295 70933648 79800354 88667060 106400472 119700531 133000590 159600708 177334120 199500885 212800944 239401062 266001180 319201416 354668240 359101593 399001770 478802124 532002360 598502655 638402832 718203186 798003540 957604248 1064004720 1197005310 1436406372 1596007080 1795507965 1915208496 2394010620 2872812744 3192014160 3591015930 4788021240 5745625488 7182031860 9576042480 14364063720 28728127440
• Sum of all divisors σ(n): 99938523168
• Sum of proper divisors (its aliquot sum) s(n): 71210395728
• 28728127440 is an abundant number, because the sum of its proper divisors (71210395728) is greater than itself. Its abundance is 42482268288

Bases of 28728127440

• Binary: 11010110000010101000110111111010000₂
• Hexadecimal: 0x6B0546FD0
• Base-36: D73ZH00

Squares and roots of 28728127440

• 28728127440 squared (28728127440²) is 825305306208880953600
• 28728127440 cubed (28728127440³) is 23709476013676955294809526784000
• The square root of 28728127440 is 169493.7386454143
• The cube root of 28728127440 is 3062.6857619709

Scales and comparisons

• 28,728,127,440 seconds is equal to 913 years, 24 weeks, 1 day, 11 hours, 24 minutes.
• To count from 1 to 28,728,127,440 would take you about one thousand, eight hundred twenty-six 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 28728127440 cubic inches would be around 255.2 feet tall.

Recreational maths with 28728127440

• 28728127440 backwards is 04472182782
• 28728127440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28728127440's digits is 45
• More coming soon!