256329366 has 16 divisors (see below), whose sum is σ = 542815344. Its totient is φ = 80417024.

The previous prime is 256329317. The next prime is 256329371. The reversal of 256329366 is 663923652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256415 + ... + 1256618.

It is an arithmetic number, because the mean of its divisors is an integer number (33925959).

Almost surely, 2^256329366 is an apocalyptic number.

256329366 is an abundant number, since it is smaller than the sum of its proper divisors (286485978).

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

256329366 is a wasteful number, since it uses less digits than its factorization.

256329366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513055.

The product of its digits is 349920, while the sum is 42.

The square root of 256329366 is about 16010.2893790212. The cubic root of 256329366 is about 635.2326144699.

The spelling of 256329366 in words is "two hundred fifty-six million, three hundred twenty-nine thousand, three hundred sixty-six".