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12804608 = 2989281
BaseRepresentation
bin110000110110…
…001000000000
3220002112121202
4300312020000
511234221413
61134240332
7213560135
oct60661000
926075552
1012804608
117256323
1243560a8
1328642bb
1419b458c
1511cde58
hexc36200

12804608 has 40 divisors (see below), whose sum is σ = 25963740. Its totient is φ = 6307840.

The previous prime is 12804607. The next prime is 12804661. The reversal of 12804608 is 80640821.

It can be written as a sum of positive squares in 2 ways, for example, as 12730624 + 73984 = 3568^2 + 272^2 .

It is not an unprimeable number, because it can be changed into a prime (12804607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45428 + ... + 45708.

Almost surely, 212804608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12804608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12981870).

12804608 is an abundant number, since it is smaller than the sum of its proper divisors (13159132).

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

12804608 is an frugal number, since it uses more digits than its factorization.

12804608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 12804608 is about 3578.3526936287. The cubic root of 12804608 is about 233.9494862595.

The spelling of 12804608 in words is "twelve million, eight hundred four thousand, six hundred eight".

Divisors: 1 2 4 8 16 32 64 89 128 178 256 281 356 512 562 712 1124 1424 2248 2848 4496 5696 8992 11392 17984 22784 25009 35968 45568 50018 71936 100036 143872 200072 400144 800288 1600576 3201152 6402304 12804608