78145304 has 8 divisors (see below), whose sum is σ = 146522460. Its totient is φ = 39072648.

The previous prime is 78145279. The next prime is 78145313. The reversal of 78145304 is 40354187.

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

It is a super-2 number, since 2×78145304² = 12213377074504832, which contains 22 as substring.

It is a congruent 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 as a sum of consecutive naturals, namely, 4884074 + ... + 4884089.

Almost surely, 2^78145304 is an apocalyptic number.

It is an amenable number.

78145304 is a deficient number, since it is larger than the sum of its proper divisors (68377156).

78145304 is a wasteful number, since it uses less digits than its factorization.

78145304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9768169 (or 9768165 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 78145304 is about 8839.9832579027. The cubic root of 78145304 is about 427.5310174364.

The spelling of 78145304 in words is "seventy-eight million, one hundred forty-five thousand, three hundred four".