27305139 has 16 divisors (see below), whose sum is σ = 37818144. Its totient is φ = 17510400.

The previous prime is 27305137. The next prime is 27305171. The reversal of 27305139 is 93150372.

It is not a de Polignac number, because 27305139 - 2¹ = 27305137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27305137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7459 + ... + 10499.

It is an arithmetic number, because the mean of its divisors is an integer number (2363634).

Almost surely, 2^27305139 is an apocalyptic number.

27305139 is a deficient number, since it is larger than the sum of its proper divisors (10513005).

27305139 is a wasteful number, since it uses less digits than its factorization.

27305139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 27305139 is about 5225.4319438684. The cubic root of 27305139 is about 301.1259135537.

The spelling of 27305139 in words is "twenty-seven million, three hundred five thousand, one hundred thirty-nine".