2738638 has 16 divisors (see below), whose sum is σ = 4723200. Its totient is φ = 1166616.

The previous prime is 2738623. The next prime is 2738639. The reversal of 2738638 is 8368372.

It is a junction number, because it is equal to n+sod(n) for n = 2738597 and 2738606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2738639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2295 + ... + 3277.

It is an arithmetic number, because the mean of its divisors is an integer number (295200).

2^2738638 is an apocalyptic number.

2738638 is a deficient number, since it is larger than the sum of its proper divisors (1984562).

2738638 is a wasteful number, since it uses less digits than its factorization.

2738638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191.

The product of its digits is 48384, while the sum is 37.

The square root of 2738638 is about 1654.8830774408. The cubic root of 2738638 is about 139.9087500614.

It can be divided in two parts, 273 and 8638, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 2738638 in words is "two million, seven hundred thirty-eight thousand, six hundred thirty-eight".