3256981 has 12 divisors (see below), whose sum is σ = 4080972. Its totient is φ = 2576448.

The previous prime is 3256951. The next prime is 3256987. The reversal of 3256981 is 1896523.

3256981 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 194481 + 3062500 = 441^2 + 1750^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3256981 is a prime.

It is a super-2 number, since 2×3256981² = 21215850468722, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3256987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1920 + ... + 3193.

It is an arithmetic number, because the mean of its divisors is an integer number (340081).

Almost surely, 2^3256981 is an apocalyptic number.

It is an amenable number.

3256981 is a deficient number, since it is larger than the sum of its proper divisors (823991).

3256981 is a wasteful number, since it uses less digits than its factorization.

3256981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140 (or 5133 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 3256981 is about 1804.7107801529. The cubic root of 3256981 is about 148.2307849330.

The spelling of 3256981 in words is "three million, two hundred fifty-six thousand, nine hundred eighty-one".