2638144 has 14 divisors (see below), whose sum is σ = 5235194. Its totient is φ = 1319040.

The previous prime is 2638087. The next prime is 2638177. The reversal of 2638144 is 4418362.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 788544 = 1360^2 + 888^2 .

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 3³ + 8⁷ + 1 + 4⁴ + 4⁷ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20547 + ... + 20674.

2^2638144 is an apocalyptic number.

It is an amenable number.

2638144 is a deficient number, since it is larger than the sum of its proper divisors (2597050).

2638144 is an equidigital number, since it uses as much as digits as its factorization.

2638144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41233 (or 41223 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 2638144 is about 1624.2364359908. The cubic root of 2638144 is about 138.1760687610.

The spelling of 2638144 in words is "two million, six hundred thirty-eight thousand, one hundred forty-four".