256274746 has 32 divisors (see below), whose sum is σ = 475050240. Its totient is φ = 100970496.

The previous prime is 256274743. The next prime is 256274747. The reversal of 256274746 is 647472652.

It is not an unprimeable number, because it can be changed into a prime (256274743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44035 + ... + 49513.

It is an arithmetic number, because the mean of its divisors is an integer number (14845320).

Almost surely, 2^256274746 is an apocalyptic number.

256274746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256274746 is a deficient number, since it is larger than the sum of its proper divisors (218775494).

256274746 is a wasteful number, since it uses less digits than its factorization.

256274746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758.

The product of its digits is 564480, while the sum is 43.

The square root of 256274746 is about 16008.5835101048. The cubic root of 256274746 is about 635.1874917037.

The spelling of 256274746 in words is "two hundred fifty-six million, two hundred seventy-four thousand, seven hundred forty-six".