239145864 has 32 divisors (see below), whose sum is σ = 607669440. Its totient is φ = 78408000.

The previous prime is 239145857. The next prime is 239145899. The reversal of 239145864 is 468541932.

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, 80212 + ... + 83139.

It is an arithmetic number, because the mean of its divisors is an integer number (18989670).

Almost surely, 2^239145864 is an apocalyptic number.

239145864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

239145864 is an abundant number, since it is smaller than the sum of its proper divisors (368523576).

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

239145864 is a wasteful number, since it uses less digits than its factorization.

239145864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163421 (or 163417 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 239145864 is about 15464.3416930693. The cubic root of 239145864 is about 620.7084029067.

The spelling of 239145864 in words is "two hundred thirty-nine million, one hundred forty-five thousand, eight hundred sixty-four".