981256 has 16 divisors (see below), whose sum is σ = 1853100. Its totient is φ = 487104.

The previous prime is 981241. The next prime is 981263. The reversal of 981256 is 652189.

981256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 980100 + 1156 = 990^2 + 34^2 .

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

981256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030 + ... + 1738.

2⁹⁸¹²⁵⁶ is an apocalyptic number.

981256 is the 627-th centered pentagonal number.

It is an amenable number.

981256 is a deficient number, since it is larger than the sum of its proper divisors (871844).

981256 is a wasteful number, since it uses less digits than its factorization.

981256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 884 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 981256 is about 990.5836663301. The cubic root of 981256 is about 99.3712550835.

The spelling of 981256 in words is "nine hundred eighty-one thousand, two hundred fifty-six".