264499128 has 32 divisors (see below), whose sum is σ = 734720400. Its totient is φ = 88166304.

The previous prime is 264499091. The next prime is 264499139. The reversal of 264499128 is 821994462.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612051 + ... + 612482.

Almost surely, 2^264499128 is an apocalyptic number.

It is an amenable number.

264499128 is an abundant number, since it is smaller than the sum of its proper divisors (470221272).

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

264499128 is a wasteful number, since it uses less digits than its factorization.

264499128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224548 (or 1224538 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 264499128 is about 16263.4291586984. The cubic root of 264499128 is about 641.9108968837.

The spelling of 264499128 in words is "two hundred sixty-four million, four hundred ninety-nine thousand, one hundred twenty-eight".