27139671 has 32 divisors (see below), whose sum is σ = 43653120. Its totient is φ = 16565472.

The previous prime is 27139643. The next prime is 27139681. The reversal of 27139671 is 17693172.

It is a happy number.

It is not a de Polignac number, because 27139671 - 2¹⁹ = 26615383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27139631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58386 + ... + 58848.

It is an arithmetic number, because the mean of its divisors is an integer number (1364160).

Almost surely, 2^27139671 is an apocalyptic number.

27139671 is a deficient number, since it is larger than the sum of its proper divisors (16513449).

27139671 is a wasteful number, since it uses less digits than its factorization.

27139671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 646 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 27139671 is about 5209.5749346756. The cubic root of 27139671 is about 300.5164105571.

The spelling of 27139671 in words is "twenty-seven million, one hundred thirty-nine thousand, six hundred seventy-one".