27708939 has 8 divisors (see below), whose sum is σ = 41050320. Its totient is φ = 18472608.

The previous prime is 27708931. The next prime is 27708977. The reversal of 27708939 is 93980772.

It is not a de Polignac number, because 27708939 - 2³ = 27708931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27708894 and 27708903.

It is not an unprimeable number, because it can be changed into a prime (27708931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513102 + ... + 513155.

It is an arithmetic number, because the mean of its divisors is an integer number (5131290).

Almost surely, 2^27708939 is an apocalyptic number.

27708939 is a deficient number, since it is larger than the sum of its proper divisors (13341381).

27708939 is a wasteful number, since it uses less digits than its factorization.

27708939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026266 (or 1026260 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 27708939 is about 5263.9280960135. The cubic root of 27708939 is about 302.6030484700.

The spelling of 27708939 in words is "twenty-seven million, seven hundred eight thousand, nine hundred thirty-nine".