27216516 has 12 divisors (see below), whose sum is σ = 63505232. Its totient is φ = 9072168.

The previous prime is 27216509. The next prime is 27216547. The reversal of 27216516 is 61561272.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1134010 + ... + 1134033.

Almost surely, 2^27216516 is an apocalyptic number.

It is an amenable number.

27216516 is an abundant number, since it is smaller than the sum of its proper divisors (36288716).

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

27216516 is a wasteful number, since it uses less digits than its factorization.

27216516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268050 (or 2268048 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 27216516 is about 5216.9450830922. The cubic root of 27216516 is about 300.7997770719.

Adding to 27216516 its reverse (61561272), we get a palindrome (88777788).

The spelling of 27216516 in words is "twenty-seven million, two hundred sixteen thousand, five hundred sixteen".