27685139 has 8 divisors (see below), whose sum is σ = 29351808. Its totient is φ = 26066880.

The previous prime is 27685121. The next prime is 27685159. The reversal of 27685139 is 93158672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27685139 - 2⁸ = 27684883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27685096 and 27685105.

It is not an unprimeable number, because it can be changed into a prime (27685159) 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, 10922 + ... + 13215.

It is an arithmetic number, because the mean of its divisors is an integer number (3668976).

Almost surely, 2^27685139 is an apocalyptic number.

27685139 is a deficient number, since it is larger than the sum of its proper divisors (1666669).

27685139 is a wasteful number, since it uses less digits than its factorization.

27685139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24205.

The product of its digits is 90720, while the sum is 41.

The square root of 27685139 is about 5261.6669411889. Note that the first 3 decimals coincide. The cubic root of 27685139 is about 302.5163855159.

The spelling of 27685139 in words is "twenty-seven million, six hundred eighty-five thousand, one hundred thirty-nine".