504615978 has 12 divisors (see below), whose sum is σ = 1093334658. Its totient is φ = 168205320.

The previous prime is 504615941. The next prime is 504615997. The reversal of 504615978 is 879516405.

504615978 is a `hidden beast` number, since 50 + 4 + 6 + 1 + 597 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 406546569 + 98069409 = 20163^2 + 9903^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14017093 + ... + 14017128.

Almost surely, 2^504615978 is an apocalyptic number.

504615978 is an abundant number, since it is smaller than the sum of its proper divisors (588718680).

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

504615978 is a wasteful number, since it uses less digits than its factorization.

504615978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28034229 (or 28034226 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 504615978 is about 22463.6590518998. The cubic root of 504615978 is about 796.1355174858.

The spelling of 504615978 in words is "five hundred four million, six hundred fifteen thousand, nine hundred seventy-eight".