265319040 has 256 divisors, whose sum is σ = 1018368000. Its totient is φ = 57397248.

The previous prime is 265319023. The next prime is 265319063. The reversal of 265319040 is 40913562.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 265318989 and 265319007.

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, 254841 + ... + 255879.

It is an arithmetic number, because the mean of its divisors is an integer number (3978000).

Almost surely, 2^265319040 is an apocalyptic number.

265319040 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 265319040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509184000).

265319040 is an abundant number, since it is smaller than the sum of its proper divisors (753048960).

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

265319040 is a wasteful number, since it uses less digits than its factorization.

265319040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 265319040 is about 16288.6168841925. The cubic root of 265319040 is about 642.5734920753.

The spelling of 265319040 in words is "two hundred sixty-five million, three hundred nineteen thousand, forty".