564490388 has 36 divisors (see below), whose sum is σ = 1253613312. Its totient is φ = 219930480.

The previous prime is 564490363. The next prime is 564490411. The reversal of 564490388 is 883094465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128756 + ... + 133067.

It is an arithmetic number, because the mean of its divisors is an integer number (34822592).

Almost surely, 2^564490388 is an apocalyptic number.

It is an amenable number.

564490388 is an abundant number, since it is smaller than the sum of its proper divisors (689122924).

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

564490388 is a wasteful number, since it uses less digits than its factorization.

564490388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261852 (or 261843 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 564490388 is about 23759.0064607087. The cubic root of 564490388 is about 826.4543129400.

The spelling of 564490388 in words is "five hundred sixty-four million, four hundred ninety thousand, three hundred eighty-eight".