264775280 has 160 divisors (see below), whose sum is σ = 782949888. Its totient is φ = 80870400.

The previous prime is 264775261. The next prime is 264775283. The reversal of 264775280 is 82577462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264775283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326075 + ... + 326885.

Almost surely, 2^264775280 is an apocalyptic number.

264775280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264775280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391474944).

264775280 is an abundant number, since it is smaller than the sum of its proper divisors (518174608).

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

264775280 is a wasteful number, since it uses less digits than its factorization.

264775280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 264775280 is about 16271.9169122756. The cubic root of 264775280 is about 642.1342162364.

The spelling of 264775280 in words is "two hundred sixty-four million, seven hundred seventy-five thousand, two hundred eighty".