265279872 has 128 divisors (see below), whose sum is σ = 828011520. Its totient is φ = 74188800.

The previous prime is 265279841. The next prime is 265279921. The reversal of 265279872 is 278972562.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52497 + ... + 57327.

It is an arithmetic number, because the mean of its divisors is an integer number (6468840).

Almost surely, 2^265279872 is an apocalyptic number.

265279872 is a gapful number since it is divisible by the number (22) 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 265279872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414005760).

265279872 is an abundant number, since it is smaller than the sum of its proper divisors (562731648).

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

265279872 is a wasteful number, since it uses less digits than its factorization.

265279872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872 (or 4860 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 265279872 is about 16287.4145277880. The cubic root of 265279872 is about 642.5418703252.

The spelling of 265279872 in words is "two hundred sixty-five million, two hundred seventy-nine thousand, eight hundred seventy-two".