27984872 has 16 divisors (see below), whose sum is σ = 55233600. Its totient is φ = 13255920.

The previous prime is 27984871. The next prime is 27984883. The reversal of 27984872 is 27848972.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27984871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91904 + ... + 92207.

It is an arithmetic number, because the mean of its divisors is an integer number (3452100).

Almost surely, 2^27984872 is an apocalyptic number.

It is an amenable number.

27984872 is a deficient number, since it is larger than the sum of its proper divisors (27248728).

27984872 is a wasteful number, since it uses less digits than its factorization.

27984872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184136 (or 184132 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 27984872 is about 5290.0729673607. The cubic root of 27984872 is about 303.6041998143.

The spelling of 27984872 in words is "twenty-seven million, nine hundred eighty-four thousand, eight hundred seventy-two".