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12808828 = 2231531949
BaseRepresentation
bin110000110111…
…001001111100
3220002202102001
4300313021330
511234340303
61134312044
7213605344
oct60671174
926082361
1012808828
11725950a
124358624
1328661b6
1419b5d24
1511d031d
hexc3727c

12808828 has 24 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 6077760.

The previous prime is 12808819. The next prime is 12808843. The reversal of 12808828 is 82880821.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5598 + ... + 7546.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 212808828 is an apocalyptic number.

It is an amenable number.

12808828 is a deficient number, since it is larger than the sum of its proper divisors (10778372).

12808828 is a wasteful number, since it uses less digits than its factorization.

12808828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037 (or 2035 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 37.

The square root of 12808828 is about 3578.9423018540. The cubic root of 12808828 is about 233.9751842581.

The spelling of 12808828 in words is "twelve million, eight hundred eight thousand, eight hundred twenty-eight".

Divisors: 1 2 4 31 53 62 106 124 212 1643 1949 3286 3898 6572 7796 60419 103297 120838 206594 241676 413188 3202207 6404414 12808828