264423644 has 24 divisors (see below), whose sum is σ = 492473520. Its totient is φ = 123796736.

The previous prime is 264423587. The next prime is 264423659. The reversal of 264423644 is 446324462.

It is a congruent number.

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, 3527 + ... + 23265.

It is an arithmetic number, because the mean of its divisors is an integer number (20519730).

Almost surely, 2^264423644 is an apocalyptic number.

It is an amenable number.

264423644 is a deficient number, since it is larger than the sum of its proper divisors (228049876).

264423644 is a wasteful number, since it uses less digits than its factorization.

264423644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19957 (or 19955 counting only the distinct ones).

The product of its digits is 110592, while the sum is 35.

The square root of 264423644 is about 16261.1083263104. The cubic root of 264423644 is about 641.8498272278.

The spelling of 264423644 in words is "two hundred sixty-four million, four hundred twenty-three thousand, six hundred forty-four".