264239164 has 72 divisors (see below), whose sum is σ = 560821632. Its totient is φ = 108501120.

The previous prime is 264239149. The next prime is 264239189. The reversal of 264239164 is 461932462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953794 + ... + 954070.

Almost surely, 2^264239164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264239164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280410816).

264239164 is an abundant number, since it is smaller than the sum of its proper divisors (296582468).

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

264239164 is a wasteful number, since it uses less digits than its factorization.

264239164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 474 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 264239164 is about 16255.4349065167. The cubic root of 264239164 is about 641.7005264042.

The spelling of 264239164 in words is "two hundred sixty-four million, two hundred thirty-nine thousand, one hundred sixty-four".