Base | Representation |
---|---|
bin | 11010000111110111… |
… | …011010111110101000 |
3 | 2200101210121212011200 |
4 | 122013313122332220 |
5 | 424421102200420 |
6 | 20515144524200 |
7 | 2012041513416 |
oct | 320767327650 |
9 | 80353555150 |
10 | 28049256360 |
11 | 1099408a504 |
12 | 5529780660 |
13 | 28501a5818 |
14 | 15013322b6 |
15 | ae2745b90 |
hex | 687ddafa8 |
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".
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