27782138 has 16 divisors (see below), whose sum is σ = 43422720. Its totient is φ = 13316400.

The previous prime is 27782129. The next prime is 27782141. The reversal of 27782138 is 83128772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4703 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (2713920).

Almost surely, 2^27782138 is an apocalyptic number.

27782138 is a deficient number, since it is larger than the sum of its proper divisors (15640582).

27782138 is a wasteful number, since it uses less digits than its factorization.

27782138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253.

The product of its digits is 37632, while the sum is 38.

The square root of 27782138 is about 5270.8763977160. The cubic root of 27782138 is about 302.8692774088.

The spelling of 27782138 in words is "twenty-seven million, seven hundred eighty-two thousand, one hundred thirty-eight".