27138816 has 54 divisors (see below), whose sum is σ = 78254540. Its totient is φ = 9045504.

The previous prime is 27138799. The next prime is 27138823. The reversal of 27138816 is 61883172.

27138816 is a `hidden beast` number, since 271 + 388 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3586 + ... + 8193.

Almost surely, 2^27138816 is an apocalyptic number.

It is an amenable number.

27138816 is an abundant number, since it is smaller than the sum of its proper divisors (51115724).

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

27138816 is a wasteful number, since it uses less digits than its factorization.

27138816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11801 (or 11784 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 27138816 is about 5209.4928735914. The cubic root of 27138816 is about 300.5132547312.

The spelling of 27138816 in words is "twenty-seven million, one hundred thirty-eight thousand, eight hundred sixteen".