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28049256360 = 23325470316567
BaseRepresentation
bin11010000111110111…
…011010111110101000
32200101210121212011200
4122013313122332220
5424421102200420
620515144524200
72012041513416
oct320767327650
980353555150
1028049256360
111099408a504
125529780660
1328501a5818
1415013322b6
15ae2745b90
hex687ddafa8

28049256360 has 96 divisors (see below), whose sum is σ = 91184970240. Its totient is φ = 7477759872.

The previous prime is 28049256353. The next prime is 28049256377. The reversal of 28049256360 is 6365294082.

28049256360 is a `hidden beast` number, since 2 + 8 + 0 + 4 + 9 + 2 + 5 + 636 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1684797 + ... + 1701363.

It is an arithmetic number, because the mean of its divisors is an integer number (949843440).

Almost surely, 228049256360 is an apocalyptic number.

28049256360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28049256360 is an abundant number, since it is smaller than the sum of its proper divisors (63135713880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28049256360 is a wasteful number, since it uses less digits than its factorization.

28049256360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21287 (or 21280 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 28049256360 in words is "twenty-eight billion, forty-nine million, two hundred fifty-six thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 4703 9406 14109 16567 18812 23515 28218 33134 37624 42327 47030 49701 56436 66268 70545 82835 84654 94060 99402 112872 132536 141090 149103 165670 169308 188120 198804 211635 248505 282180 298206 331340 338616 397608 423270 497010 564360 596412 662680 745515 846540 994020 1192824 1491030 1693080 1988040 2982060 5964120 77914601 155829202 233743803 311658404 389573005 467487606 623316808 701231409 779146010 934975212 1168719015 1402462818 1558292020 1869950424 2337438030 2804925636 3116584040 3506157045 4674876060 5609851272 7012314090 9349752120 14024628180 28049256360