2638916 has 24 divisors (see below), whose sum is σ = 5349120. Its totient is φ = 1115712.

The previous prime is 2638907. The next prime is 2638919. The reversal of 2638916 is 6198362.

It is not an unprimeable number, because it can be changed into a prime (2638919) 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, 1616 + ... + 2808.

It is an arithmetic number, because the mean of its divisors is an integer number (222880).

2^2638916 is an apocalyptic number.

It is an amenable number.

2638916 is an abundant number, since it is smaller than the sum of its proper divisors (2710204).

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

2638916 is a wasteful number, since it uses less digits than its factorization.

2638916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1281 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 2638916 is about 1624.4740687373. The cubic root of 2638916 is about 138.1895455995.

It can be divided in two parts, 26389 and 16, that multiplied together give a palindrome (422224).

The spelling of 2638916 in words is "two million, six hundred thirty-eight thousand, nine hundred sixteen".