2638044 has 36 divisors (see below), whose sum is σ = 6732544. Its totient is φ = 870912.

The previous prime is 2638039. The next prime is 2638057. The reversal of 2638044 is 4408362.

2638044 = T₁₃₇ + T₁₃₈ + ... + T₂₆₃.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2638044² = 13918552291872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2637999 and 2638017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4284 + ... + 4860.

2^2638044 is an apocalyptic number.

It is an amenable number.

2638044 is an abundant number, since it is smaller than the sum of its proper divisors (4094500).

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

2638044 is a wasteful number, since it uses less digits than its factorization.

2638044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 2638044 is about 1624.2056520035. The cubic root of 2638044 is about 138.1743228642.

The spelling of 2638044 in words is "two million, six hundred thirty-eight thousand, forty-four".