12785004 has 18 divisors (see below), whose sum is σ = 32317740. Its totient is φ = 4261656.

The previous prime is 12784999. The next prime is 12785011. The reversal of 12785004 is 40058721.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177534 + ... + 177605.

It is an arithmetic number, because the mean of its divisors is an integer number (1795430).

Almost surely, 2^12785004 is an apocalyptic number.

It is an amenable number.

12785004 is an abundant number, since it is smaller than the sum of its proper divisors (19532736).

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

12785004 is a wasteful number, since it uses less digits than its factorization.

12785004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355149 (or 355144 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12785004 is about 3575.6123951010. The cubic root of 12785004 is about 233.8300321717.

The spelling of 12785004 in words is "twelve million, seven hundred eighty-five thousand, four".