258320864 has 24 divisors (see below), whose sum is σ = 526107960. Its totient is φ = 124706176.

The previous prime is 258320863. The next prime is 258320873. The reversal of 258320864 is 468023852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258320863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138254 + ... + 140109.

It is an arithmetic number, because the mean of its divisors is an integer number (21921165).

Almost surely, 2^258320864 is an apocalyptic number.

It is an amenable number.

258320864 is an abundant number, since it is smaller than the sum of its proper divisors (267787096).

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

258320864 is a wasteful number, since it uses less digits than its factorization.

258320864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278402 (or 278394 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 258320864 is about 16072.3633607507. The cubic root of 258320864 is about 636.8734751461.

The spelling of 258320864 in words is "two hundred fifty-eight million, three hundred twenty thousand, eight hundred sixty-four".