27999992 has 8 divisors (see below), whose sum is σ = 52500000. Its totient is φ = 13999992.

The previous prime is 27999943. The next prime is 28000019. The reversal of 27999992 is 29999972.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749992 + ... + 1750007.

It is an arithmetic number, because the mean of its divisors is an integer number (6562500).

Almost surely, 2^27999992 is an apocalyptic number.

It is an amenable number.

27999992 is a deficient number, since it is larger than the sum of its proper divisors (24500008).

27999992 is a wasteful number, since it uses less digits than its factorization.

27999992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500005 (or 3500001 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 56.

The square root of 27999992 is about 5291.5018662002. The cubic root of 27999992 is about 303.6588682677.

The spelling of 27999992 in words is "twenty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-two".