256415446 has 16 divisors (see below), whose sum is σ = 453749760. Its totient is φ = 106347240.

The previous prime is 256415443. The next prime is 256415447. The reversal of 256415446 is 644514652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256415443) 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, 294976 + ... + 295843.

It is an arithmetic number, because the mean of its divisors is an integer number (28359360).

Almost surely, 2^256415446 is an apocalyptic number.

256415446 is a deficient number, since it is larger than the sum of its proper divisors (197334314).

256415446 is a wasteful number, since it uses less digits than its factorization.

256415446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590859.

The product of its digits is 115200, while the sum is 37.

The square root of 256415446 is about 16012.9774245766. The cubic root of 256415446 is about 635.3037140146.

The spelling of 256415446 in words is "two hundred fifty-six million, four hundred fifteen thousand, four hundred forty-six".