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12804808 = 231794153
BaseRepresentation
bin110000110110…
…001011001000
3220002112220011
4300312023020
511234223213
61134241304
7213560542
oct60661310
926075804
1012804808
117256495
124356234
132864413
1419b4692
1511ce03d
hexc362c8

12804808 has 16 divisors (see below), whose sum is σ = 25421580. Its totient is φ = 6025728.

The previous prime is 12804793. The next prime is 12804809. The reversal of 12804808 is 80840821.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 116964 = 3562^2 + 342^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12804808.

It is not an unprimeable number, because it can be changed into a prime (12804809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46941 + ... + 47212.

Almost surely, 212804808 is an apocalyptic number.

It is an amenable number.

12804808 is a deficient number, since it is larger than the sum of its proper divisors (12616772).

12804808 is a wasteful number, since it uses less digits than its factorization.

12804808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94176 (or 94172 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 12804808 is about 3578.3806393395. The cubic root of 12804808 is about 233.9507043016.

The spelling of 12804808 in words is "twelve million, eight hundred four thousand, eight hundred eight".

Divisors: 1 2 4 8 17 34 68 136 94153 188306 376612 753224 1600601 3201202 6402404 12804808