256130668 has 24 divisors (see below), whose sum is σ = 483850080. Its totient is φ = 118272000.

The previous prime is 256130663. The next prime is 256130669. The reversal of 256130668 is 866031652.

It is not an unprimeable number, because it can be changed into a prime (256130663) 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, 45333 + ... + 50668.

It is an arithmetic number, because the mean of its divisors is an integer number (20160420).

Almost surely, 2^256130668 is an apocalyptic number.

It is an amenable number.

256130668 is a deficient number, since it is larger than the sum of its proper divisors (227719412).

256130668 is a wasteful number, since it uses less digits than its factorization.

256130668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96057 (or 96055 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 256130668 is about 16004.0828540720. The cubic root of 256130668 is about 635.0684349746.

The spelling of 256130668 in words is "two hundred fifty-six million, one hundred thirty thousand, six hundred sixty-eight".