27999168 has 28 divisors (see below), whose sum is σ = 74081640. Its totient is φ = 9332992.

The previous prime is 27999161. The next prime is 27999193. The reversal of 27999168 is 86199972.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27999168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27999161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 72723 + ... + 73106.

Almost surely, 2^27999168 is an apocalyptic number.

It is an amenable number.

27999168 is an abundant number, since it is smaller than the sum of its proper divisors (46082472).

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

27999168 is a wasteful number, since it uses less digits than its factorization.

27999168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145844 (or 145834 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The square root of 27999168 is about 5291.4240049348. The cubic root of 27999168 is about 303.6558894887.

The spelling of 27999168 in words is "twenty-seven million, nine hundred ninety-nine thousand, one hundred sixty-eight".