256258774 has 16 divisors (see below), whose sum is σ = 396655056. Its totient is φ = 124086400.

The previous prime is 256258753. The next prime is 256258777. The reversal of 256258774 is 477852652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256258777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172 + ... + 22639.

It is an arithmetic number, because the mean of its divisors is an integer number (24790941).

Almost surely, 2^256258774 is an apocalyptic number.

256258774 is a deficient number, since it is larger than the sum of its proper divisors (140396282).

256258774 is a wasteful number, since it uses less digits than its factorization.

256258774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22991.

The product of its digits is 940800, while the sum is 46.

The square root of 256258774 is about 16008.0846449536. The cubic root of 256258774 is about 635.1742956767.

The spelling of 256258774 in words is "two hundred fifty-six million, two hundred fifty-eight thousand, seven hundred seventy-four".