2638938 has 8 divisors (see below), whose sum is σ = 5277888. Its totient is φ = 879644.

The previous prime is 2638931. The next prime is 2638949. The reversal of 2638938 is 8398362.

It is a sphenic number, since it is the product of 3 distinct primes.

2638938 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2638896 and 2638905.

It is not an unprimeable number, because it can be changed into a prime (2638931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219906 + ... + 219917.

It is an arithmetic number, because the mean of its divisors is an integer number (659736).

2^2638938 is an apocalyptic number.

2638938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2638938 is a wasteful number, since it uses less digits than its factorization.

2638938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439828.

The product of its digits is 62208, while the sum is 39.

The square root of 2638938 is about 1624.4808401456. The cubic root of 2638938 is about 138.1899296160.

It can be divided in two parts, 263893 and 8, that added together give a triangular number (263901 = T₇₂₆).

The spelling of 2638938 in words is "two million, six hundred thirty-eight thousand, nine hundred thirty-eight".