2149644 has 48 divisors (see below), whose sum is σ = 5804288. Its totient is φ = 606528.

The previous prime is 2149621. The next prime is 2149661. The reversal of 2149644 is 4469412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13107 + ... + 13269.

2^2149644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2149644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2902144).

2149644 is an abundant number, since it is smaller than the sum of its proper divisors (3654644).

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

2149644 is a wasteful number, since it uses less digits than its factorization.

2149644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 332 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 2149644 is about 1466.1664298435. The cubic root of 2149644 is about 129.0591640155.

The spelling of 2149644 in words is "two million, one hundred forty-nine thousand, six hundred forty-four".