265310240 has 96 divisors (see below), whose sum is σ = 679175280. Its totient is φ = 97357824.

The previous prime is 265310237. The next prime is 265310261. The reversal of 265310240 is 42013562.

It can be written as a sum of positive squares in 8 ways, for example, as 69422224 + 195888016 = 8332^2 + 13996^2 .

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, 476042 + ... + 476598.

Almost surely, 2^265310240 is an apocalyptic number.

265310240 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 265310240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339587640).

265310240 is an abundant number, since it is smaller than the sum of its proper divisors (413865040).

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

265310240 is a wasteful number, since it uses less digits than its factorization.

265310240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 265310240 is about 16288.3467546587. The cubic root of 265310240 is about 642.5663877865.

The spelling of 265310240 in words is "two hundred sixty-five million, three hundred ten thousand, two hundred forty".