7978804 has 12 divisors (see below), whose sum is σ = 13989024. Its totient is φ = 3981944.

The previous prime is 7978793. The next prime is 7978807. The reversal of 7978804 is 4088797.

It is a super-2 number, since 2×7978804² = 127322626540832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978807) 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, 1047 + ... + 4129.

It is an arithmetic number, because the mean of its divisors is an integer number (1165752).

Almost surely, 2^7978804 is an apocalyptic number.

It is an amenable number.

7978804 is a deficient number, since it is larger than the sum of its proper divisors (6010220).

7978804 is a wasteful number, since it uses less digits than its factorization.

7978804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 7978804 is about 2824.6776807275. The cubic root of 7978804 is about 199.8232104400.

The spelling of 7978804 in words is "seven million, nine hundred seventy-eight thousand, eight hundred four".