27138056 has 32 divisors (see below), whose sum is σ = 55939680. Its totient is φ = 12240000.

The previous prime is 27138049. The next prime is 27138071. The reversal of 27138056 is 65083172.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10931 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (1748115).

Almost surely, 2^27138056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27138056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27969840).

27138056 is an abundant number, since it is smaller than the sum of its proper divisors (28801624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27138056 is a wasteful number, since it uses less digits than its factorization.

27138056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2401 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 27138056 is about 5209.4199293203. The cubic root of 27138056 is about 300.5104494970.

Subtracting 27138056 from its reverse (65083172), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 27138056 in words is "twenty-seven million, one hundred thirty-eight thousand, fifty-six".