27078138 has 20 divisors (see below), whose sum is σ = 60675450. Its totient is φ = 9025992.

The previous prime is 27078137. The next prime is 27078151. The reversal of 27078138 is 83187072.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 110889 = 5193^2 + 333^2 .

It is not an unprimeable number, because it can be changed into a prime (27078137) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 83413 + ... + 83736.

Almost surely, 2^27078138 is an apocalyptic number.

27078138 is an abundant number, since it is smaller than the sum of its proper divisors (33597312).

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

27078138 is a wasteful number, since it uses less digits than its factorization.

27078138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167163 (or 167154 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 27078138 is about 5203.6658232442. The cubic root of 27078138 is about 300.2891212735.

The spelling of 27078138 in words is "twenty-seven million, seventy-eight thousand, one hundred thirty-eight".