27813838 has 16 divisors (see below), whose sum is σ = 45019296. Its totient is φ = 12811680.

The previous prime is 27813833. The next prime is 27813859. The reversal of 27813838 is 83831872.

It is a self number, because there is not a number n which added to its sum of digits gives 27813838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27813833) 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, 20695 + ... + 21997.

It is an arithmetic number, because the mean of its divisors is an integer number (2813706).

Almost surely, 2^27813838 is an apocalyptic number.

27813838 is a deficient number, since it is larger than the sum of its proper divisors (17205458).

27813838 is a wasteful number, since it uses less digits than its factorization.

27813838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139.

The product of its digits is 64512, while the sum is 40.

The square root of 27813838 is about 5273.8826304725. The cubic root of 27813838 is about 302.9844270153.

The spelling of 27813838 in words is "twenty-seven million, eight hundred thirteen thousand, eight hundred thirty-eight".