256761084 has 48 divisors (see below), whose sum is σ = 620040960. Its totient is φ = 82642560.

The previous prime is 256761077. The next prime is 256761137. The reversal of 256761084 is 480167652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43129 + ... + 48719.

It is an arithmetic number, because the mean of its divisors is an integer number (12917520).

Almost surely, 2^256761084 is an apocalyptic number.

It is an amenable number.

256761084 is an abundant number, since it is smaller than the sum of its proper divisors (363279876).

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

256761084 is a wasteful number, since it uses less digits than its factorization.

256761084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5730 (or 5728 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 256761084 is about 16023.7662239562. The cubic root of 256761084 is about 635.5890407091.

The spelling of 256761084 in words is "two hundred fifty-six million, seven hundred sixty-one thousand, eighty-four".