256760540 has 24 divisors (see below), whose sum is σ = 540681792. Its totient is φ = 102421440.

The previous prime is 256760533. The next prime is 256760557. The reversal of 256760540 is 45067652.

It is a self number, because there is not a number n which added to its sum of digits gives 256760540.

It is a congruent number.

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, 10151 + ... + 24830.

It is an arithmetic number, because the mean of its divisors is an integer number (22528408).

Almost surely, 2^256760540 is an apocalyptic number.

256760540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256760540 is an abundant number, since it is smaller than the sum of its proper divisors (283921252).

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

256760540 is a wasteful number, since it uses less digits than its factorization.

256760540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35357 (or 35355 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 256760540 is about 16023.7492491614. The cubic root of 256760540 is about 635.5885918344.

The spelling of 256760540 in words is "two hundred fifty-six million, seven hundred sixty thousand, five hundred forty".