256490366 has 16 divisors (see below), whose sum is σ = 421236720. Its totient is φ = 116162880.

The previous prime is 256490359. The next prime is 256490387. The reversal of 256490366 is 663094652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14951 + ... + 27138.

It is an arithmetic number, because the mean of its divisors is an integer number (26327295).

Almost surely, 2^256490366 is an apocalyptic number.

256490366 is a deficient number, since it is larger than the sum of its proper divisors (164746354).

256490366 is a wasteful number, since it uses less digits than its factorization.

256490366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42379.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 256490366 is about 16015.3166062991. The cubic root of 256490366 is about 635.3655827775.

The spelling of 256490366 in words is "two hundred fifty-six million, four hundred ninety thousand, three hundred sixty-six".