27912816 has 40 divisors (see below), whose sum is σ = 80121360. Its totient is φ = 9304128.

The previous prime is 27912809. The next prime is 27912847. The reversal of 27912816 is 61821972.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31875 + ... + 32738.

It is an arithmetic number, because the mean of its divisors is an integer number (2003034).

Almost surely, 2^27912816 is an apocalyptic number.

It is an amenable number.

27912816 is an abundant number, since it is smaller than the sum of its proper divisors (52208544).

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

27912816 is a wasteful number, since it uses less digits than its factorization.

27912816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64630 (or 64618 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 27912816 is about 5283.2580856892. The cubic root of 27912816 is about 303.3434004897.

The spelling of 27912816 in words is "twenty-seven million, nine hundred twelve thousand, eight hundred sixteen".