265803264 has 120 divisors (see below), whose sum is σ = 788364720. Its totient is φ = 86151168.

The previous prime is 265803257. The next prime is 265803281. The reversal of 265803264 is 462308562.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169717 + ... + 171275.

It is an arithmetic number, because the mean of its divisors is an integer number (6569706).

Almost surely, 2^265803264 is an apocalyptic number.

265803264 is a gapful number since it is divisible by the number (24) 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 265803264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394182360).

265803264 is an abundant number, since it is smaller than the sum of its proper divisors (522561456).

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

265803264 is a wasteful number, since it uses less digits than its factorization.

265803264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 265803264 is about 16303.4739856265. The cubic root of 265803264 is about 642.9641669010.

The spelling of 265803264 in words is "two hundred sixty-five million, eight hundred three thousand, two hundred sixty-four".