78518930 has 16 divisors (see below), whose sum is σ = 161524800. Its totient is φ = 26920752.

The previous prime is 78518929. The next prime is 78518953. The reversal of 78518930 is 3981587.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560780 + ... + 560919.

It is an arithmetic number, because the mean of its divisors is an integer number (10095300).

Almost surely, 2^78518930 is an apocalyptic number.

78518930 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78518930 is an abundant number, since it is smaller than the sum of its proper divisors (83005870).

78518930 is a wasteful number, since it uses less digits than its factorization.

78518930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121713.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 78518930 is about 8861.0907906420. The cubic root of 78518930 is about 428.2113005914.

The spelling of 78518930 in words is "seventy-eight million, five hundred eighteen thousand, nine hundred thirty".