27215139 has 12 divisors (see below), whose sum is σ = 42211464. Its totient is φ = 15551424.

The previous prime is 27215101. The next prime is 27215161. The reversal of 27215139 is 93151272.

It is not a de Polignac number, because 27215139 - 2⁸ = 27214883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27215189) 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 11 ways as a sum of consecutive naturals, for example, 92422 + ... + 92715.

It is an arithmetic number, because the mean of its divisors is an integer number (3517622).

Almost surely, 2^27215139 is an apocalyptic number.

27215139 is a deficient number, since it is larger than the sum of its proper divisors (14996325).

27215139 is a wasteful number, since it uses less digits than its factorization.

27215139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185154 (or 185147 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 27215139 is about 5216.8131076357. The cubic root of 27215139 is about 300.7947040704.

The spelling of 27215139 in words is "twenty-seven million, two hundred fifteen thousand, one hundred thirty-nine".