78930830 has 32 divisors (see below), whose sum is σ = 164112480. Its totient is φ = 27013120.

The previous prime is 78930821. The next prime is 78930869. The reversal of 78930830 is 3803987.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19235 + ... + 22974.

It is an arithmetic number, because the mean of its divisors is an integer number (5128515).

Almost surely, 2^78930830 is an apocalyptic number.

78930830 is an abundant number, since it is smaller than the sum of its proper divisors (85181650).

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

78930830 is a wasteful number, since it uses less digits than its factorization.

78930830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42244.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 78930830 is about 8884.3024487013. The cubic root of 78930830 is about 428.9587751512.

The spelling of 78930830 in words is "seventy-eight million, nine hundred thirty thousand, eight hundred thirty".