256462766 has 24 divisors (see below), whose sum is σ = 451481040. Its totient is φ = 108935232.

The previous prime is 256462753. The next prime is 256462769. The reversal of 256462766 is 667264652.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256462769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 506 + ... + 22653.

It is an arithmetic number, because the mean of its divisors is an integer number (18811710).

Almost surely, 2^256462766 is an apocalyptic number.

256462766 is a deficient number, since it is larger than the sum of its proper divisors (195018274).

256462766 is a wasteful number, since it uses less digits than its factorization.

256462766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288 (or 23281 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The square root of 256462766 is about 16014.4549079886. The cubic root of 256462766 is about 635.3427921631.

The spelling of 256462766 in words is "two hundred fifty-six million, four hundred sixty-two thousand, seven hundred sixty-six".