256204630 has 16 divisors (see below), whose sum is σ = 503092944. Its totient is φ = 93165280.

The previous prime is 256204573. The next prime is 256204631. The reversal of 256204630 is 36402652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256204631) 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 7 ways as a sum of consecutive naturals, for example, 1164457 + ... + 1164676.

It is an arithmetic number, because the mean of its divisors is an integer number (31443309).

Almost surely, 2^256204630 is an apocalyptic number.

256204630 is a deficient number, since it is larger than the sum of its proper divisors (246888314).

256204630 is a wasteful number, since it uses less digits than its factorization.

256204630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329151.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 256204630 is about 16006.3934101346. The cubic root of 256204630 is about 635.1295579572.

The spelling of 256204630 in words is "two hundred fifty-six million, two hundred four thousand, six hundred thirty".