2681944 has 16 divisors (see below), whose sum is σ = 5046120. Its totient is φ = 1336320.

The previous prime is 2681929. The next prime is 2681951. The reversal of 2681944 is 4491862.

2681944 = T₃₁₀ + T₃₁₁ + ... + T₃₅₇.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864 + ... + 4504.

2^2681944 is an apocalyptic number.

It is an amenable number.

2681944 is a deficient number, since it is larger than the sum of its proper divisors (2364176).

2681944 is a wasteful number, since it uses less digits than its factorization.

2681944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1166 counting only the distinct ones).

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

The square root of 2681944 is about 1637.6641902417. The cubic root of 2681944 is about 138.9365685426.

The spelling of 2681944 in words is "two million, six hundred eighty-one thousand, nine hundred forty-four".