78230308 has 12 divisors (see below), whose sum is σ = 147434140. Its totient is φ = 36106272.

The previous prime is 78230261. The next prime is 78230357. The reversal of 78230308 is 80303287.

It can be written as a sum of positive squares in 2 ways, for example, as 23736384 + 54493924 = 4872^2 + 7382^2 .

It is a super-2 number, since 2×78230308² = 12239962179549728, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78230308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752163 + ... + 752266.

Almost surely, 2^78230308 is an apocalyptic number.

It is an amenable number.

78230308 is a deficient number, since it is larger than the sum of its proper divisors (69203832).

78230308 is a wasteful number, since it uses less digits than its factorization.

78230308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504446 (or 1504444 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 78230308 is about 8844.7898787931. The cubic root of 78230308 is about 427.6859795200.

The spelling of 78230308 in words is "seventy-eight million, two hundred thirty thousand, three hundred eight".