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12568820 = 2251157131
BaseRepresentation
bin101111111100…
…100011110100
3212122120011212
4233330203310
511204200240
61125220552
7211555535
oct57744364
925576155
1012568820
117105160
124261758
1327b0b94
14195268c
151184165
hexbfc8f4

12568820 has 24 divisors (see below), whose sum is σ = 28794528. Its totient is φ = 4570400.

The previous prime is 12568813. The next prime is 12568841. The reversal of 12568820 is 2886521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28346 + ... + 28785.

It is an arithmetic number, because the mean of its divisors is an integer number (1199772).

Almost surely, 212568820 is an apocalyptic number.

12568820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12568820 is an abundant number, since it is smaller than the sum of its proper divisors (16225708).

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

12568820 is a wasteful number, since it uses less digits than its factorization.

12568820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57151 (or 57149 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 12568820 is about 3545.2531644440. The cubic root of 12568820 is about 232.5045746200.

The spelling of 12568820 in words is "twelve million, five hundred sixty-eight thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 57131 114262 228524 285655 571310 628441 1142620 1256882 2513764 3142205 6284410 12568820