256414490 has 8 divisors (see below), whose sum is σ = 461546100. Its totient is φ = 102565792.

The previous prime is 256414489. The next prime is 256414507. The reversal of 256414490 is 94414652.

It can be written as a sum of positive squares in 2 ways, for example, as 241149841 + 15264649 = 15529^2 + 3907^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 256414490.

It is an unprimeable number.

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, 12820715 + ... + 12820734.

Almost surely, 2^256414490 is an apocalyptic number.

256414490 is a deficient number, since it is larger than the sum of its proper divisors (205131610).

256414490 is a wasteful number, since it uses less digits than its factorization.

256414490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25641456.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 256414490 is about 16012.9475737604. The cubic root of 256414490 is about 635.3029244741.

The spelling of 256414490 in words is "two hundred fifty-six million, four hundred fourteen thousand, four hundred ninety".