265872240 has 160 divisors (see below), whose sum is σ = 927440640. Its totient is φ = 69997824.

The previous prime is 265872227. The next prime is 265872259. The reversal of 265872240 is 42278562.

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

It is a junction number, because it is equal to n+sod(n) for n = 265872195 and 265872204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178539 + ... + 180021.

It is an arithmetic number, because the mean of its divisors is an integer number (5796504).

Almost surely, 2^265872240 is an apocalyptic number.

265872240 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 265872240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463720320).

265872240 is an abundant number, since it is smaller than the sum of its proper divisors (661568400).

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

265872240 is a wasteful number, since it uses less digits than its factorization.

265872240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 265872240 is about 16305.5892257839. The cubic root of 265872240 is about 643.0197785341.

The spelling of 265872240 in words is "two hundred sixty-five million, eight hundred seventy-two thousand, two hundred forty".