264715840 has 56 divisors (see below), whose sum is σ = 667447992. Its totient is φ = 99655680.

The previous prime is 264715819. The next prime is 264715883. The reversal of 264715840 is 48517462.

264715840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33918976 + 230796864 = 5824^2 + 15192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 264715840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18891 + ... + 29770.

Almost surely, 2^264715840 is an apocalyptic number.

264715840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264715840 is an abundant number, since it is smaller than the sum of its proper divisors (402732152).

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

264715840 is a wasteful number, since it uses less digits than its factorization.

264715840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48695 (or 48685 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 264715840 is about 16270.0903500872. The cubic root of 264715840 is about 642.0861612539.

The spelling of 264715840 in words is "two hundred sixty-four million, seven hundred fifteen thousand, eight hundred forty".