2638755 has 24 divisors (see below), whose sum is σ = 5227872. Its totient is φ = 1206144.

The previous prime is 2638747. The next prime is 2638771. The reversal of 2638755 is 5578362.

It is not a de Polignac number, because 2638755 - 2³ = 2638747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3874 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (217828).

2^2638755 is an apocalyptic number.

2638755 is a deficient number, since it is larger than the sum of its proper divisors (2589117).

2638755 is a wasteful number, since it uses less digits than its factorization.

2638755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395 (or 8392 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 2638755 is about 1624.4245134816. The cubic root of 2638755 is about 138.1867352323.

It can be divided in two parts, 26 and 38755, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 2638755 in words is "two million, six hundred thirty-eight thousand, seven hundred fifty-five".