78662980 has 24 divisors (see below), whose sum is σ = 180210240. Its totient is φ = 28604640.

The previous prime is 78662939. The next prime is 78663017. The reversal of 78662980 is 8926687.

It is a self number, because there is not a number n which added to its sum of digits gives 78662980.

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, 178560 + ... + 178999.

It is an arithmetic number, because the mean of its divisors is an integer number (7508760).

Almost surely, 2^78662980 is an apocalyptic number.

It is an amenable number.

78662980 is an abundant number, since it is smaller than the sum of its proper divisors (101547260).

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

78662980 is a wasteful number, since it uses less digits than its factorization.

78662980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357579 (or 357577 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 78662980 is about 8869.2152978716. The cubic root of 78662980 is about 428.4730045938.

The spelling of 78662980 in words is "seventy-eight million, six hundred sixty-two thousand, nine hundred eighty".