2981644 has 12 divisors (see below), whose sum is σ = 5269264. Its totient is φ = 1476144.

The previous prime is 2981597. The next prime is 2981653. The reversal of 2981644 is 4461892.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3207 + ... + 4030.

2^2981644 is an apocalyptic number.

It is an amenable number.

2981644 is a deficient number, since it is larger than the sum of its proper divisors (2287620).

2981644 is a wasteful number, since it uses less digits than its factorization.

2981644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7344 (or 7342 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 2981644 is about 1726.7437563229. The cubic root of 2981644 is about 143.9302002256.

The spelling of 2981644 in words is "two million, nine hundred eighty-one thousand, six hundred forty-four".