7904136 has 32 divisors (see below), whose sum is σ = 20088000. Its totient is φ = 2591040.

The previous prime is 7904123. The next prime is 7904161. The reversal of 7904136 is 6314097.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1236 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (627750).

Almost surely, 2^7904136 is an apocalyptic number.

It is an amenable number.

7904136 is an abundant number, since it is smaller than the sum of its proper divisors (12183864).

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

7904136 is a wasteful number, since it uses less digits than its factorization.

7904136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469 (or 5465 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 7904136 is about 2811.4295296166. The cubic root of 7904136 is about 199.1979209796.

The spelling of 7904136 in words is "seven million, nine hundred four thousand, one hundred thirty-six".