27947916 has 36 divisors (see below), whose sum is σ = 73265192. Its totient is φ = 9315648.

The previous prime is 27947903. The next prime is 27947923. The reversal of 27947916 is 61974972.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 13405 + ... + 15348.

Almost surely, 2^27947916 is an apocalyptic number.

It is an amenable number.

27947916 is an abundant number, since it is smaller than the sum of its proper divisors (45317276).

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

27947916 is a wasteful number, since it uses less digits than its factorization.

27947916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28772 (or 28758 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 27947916 is about 5286.5788559332. The cubic root of 27947916 is about 303.4704973462.

The spelling of 27947916 in words is "twenty-seven million, nine hundred forty-seven thousand, nine hundred sixteen".