256081210 has 32 divisors (see below), whose sum is σ = 574687872. Its totient is φ = 79817280.

The previous prime is 256081187. The next prime is 256081219. The reversal of 256081210 is 12180652.

It is a super-2 number, since 2×256081210² = 131155172230128200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256081219) 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 15 ways as a sum of consecutive naturals, for example, 165517 + ... + 167056.

It is an arithmetic number, because the mean of its divisors is an integer number (17958996).

Almost surely, 2^256081210 is an apocalyptic number.

256081210 is an abundant number, since it is smaller than the sum of its proper divisors (318606662).

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

256081210 is a wasteful number, since it uses less digits than its factorization.

256081210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332598.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 256081210 is about 16002.5376112665. The cubic root of 256081210 is about 635.0275557926.

The spelling of 256081210 in words is "two hundred fifty-six million, eighty-one thousand, two hundred ten".