27823139 has 4 divisors (see below), whose sum is σ = 27977040. Its totient is φ = 27669240.

The previous prime is 27823129. The next prime is 27823141. The reversal of 27823139 is 93132872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27823139 - 2²⁰ = 26774563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27823099 and 27823108.

It is not an unprimeable number, because it can be changed into a prime (27823129) 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, 76679 + ... + 77040.

It is an arithmetic number, because the mean of its divisors is an integer number (6994260).

Almost surely, 2^27823139 is an apocalyptic number.

27823139 is a deficient number, since it is larger than the sum of its proper divisors (153901).

27823139 is a wasteful number, since it uses less digits than its factorization.

27823139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153900.

The product of its digits is 18144, while the sum is 35.

The square root of 27823139 is about 5274.7643549262. The cubic root of 27823139 is about 303.0181961065.

The spelling of 27823139 in words is "twenty-seven million, eight hundred twenty-three thousand, one hundred thirty-nine".