78330904 has 8 divisors (see below), whose sum is σ = 146870460. Its totient is φ = 39165448.

The previous prime is 78330899. The next prime is 78330919. The reversal of 78330904 is 40903387.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78330904² = 12271461042914432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78330904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4895674 + ... + 4895689.

Almost surely, 2^78330904 is an apocalyptic number.

It is an amenable number.

78330904 is a deficient number, since it is larger than the sum of its proper divisors (68539556).

78330904 is a wasteful number, since it uses less digits than its factorization.

78330904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9791369 (or 9791365 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 78330904 is about 8850.4747895240. The cubic root of 78330904 is about 427.8692208230.

The spelling of 78330904 in words is "seventy-eight million, three hundred thirty thousand, nine hundred four".