256955910 has 32 divisors (see below), whose sum is σ = 623058912. Its totient is φ = 67814400.

The previous prime is 256955893. The next prime is 256955911. The reversal of 256955910 is 19559652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256955911) 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 15 ways as a sum of consecutive naturals, for example, 41241 + ... + 47060.

It is an arithmetic number, because the mean of its divisors is an integer number (19470591).

Almost surely, 2^256955910 is an apocalyptic number.

256955910 is an abundant number, since it is smaller than the sum of its proper divisors (366103002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256955910 is a wasteful number, since it uses less digits than its factorization.

256955910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88408.

The product of its (nonzero) digits is 121500, while the sum is 42.

The square root of 256955910 is about 16029.8443535800. The cubic root of 256955910 is about 635.7497581639.

The spelling of 256955910 in words is "two hundred fifty-six million, nine hundred fifty-five thousand, nine hundred ten".