256074436 has 12 divisors (see below), whose sum is σ = 449105580. Its totient is φ = 127758560.

The previous prime is 256074431. The next prime is 256074443. The reversal of 256074436 is 634470652.

It can be written as a sum of positive squares in 2 ways, for example, as 23328900 + 232745536 = 4830^2 + 15256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256074395 and 256074404.

It is not an unprimeable number, because it can be changed into a prime (256074431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67591 + ... + 71278.

It is an arithmetic number, because the mean of its divisors is an integer number (37425465).

Almost surely, 2^256074436 is an apocalyptic number.

It is an amenable number.

256074436 is a deficient number, since it is larger than the sum of its proper divisors (193031144).

256074436 is a wasteful number, since it uses less digits than its factorization.

256074436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139334 (or 139332 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 256074436 is about 16002.3259559353. The cubic root of 256074436 is about 635.0219563781.

The spelling of 256074436 in words is "two hundred fifty-six million, seventy-four thousand, four hundred thirty-six".