2038644 has 18 divisors (see below), whose sum is σ = 5153330. Its totient is φ = 679536.

The previous prime is 2038639. The next prime is 2038661. The reversal of 2038644 is 4468302.

It can be written as a sum of positive squares in only one way, i.e., 1664100 + 374544 = 1290^2 + 612^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 28279 + ... + 28350.

2^2038644 is an apocalyptic number.

It is an amenable number.

2038644 is an abundant number, since it is smaller than the sum of its proper divisors (3114686).

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

2038644 is a wasteful number, since it uses less digits than its factorization.

2038644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56639 (or 56634 counting only the distinct ones).

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

The square root of 2038644 is about 1427.8109118507. The cubic root of 2038644 is about 126.7984071025.

The spelling of 2038644 in words is "two million, thirty-eight thousand, six hundred forty-four".