256842084 has 24 divisors (see below), whose sum is σ = 602408800. Its totient is φ = 85169664.

The previous prime is 256842073. The next prime is 256842151. The reversal of 256842084 is 480248652.

It is a super-2 number, since 2×256842084² = 131935712226926112, which contains 22 as substring.

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, 53134 + ... + 57765.

Almost surely, 2^256842084 is an apocalyptic number.

It is an amenable number.

256842084 is an abundant number, since it is smaller than the sum of its proper divisors (345566716).

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

256842084 is a wasteful number, since it uses less digits than its factorization.

256842084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111099 (or 111097 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 256842084 is about 16026.2935203371. The cubic root of 256842084 is about 635.6558697611.

The spelling of 256842084 in words is "two hundred fifty-six million, eight hundred forty-two thousand, eighty-four".