27993224 has 16 divisors (see below), whose sum is σ = 59985600. Its totient is φ = 11997072.

The previous prime is 27993223. The next prime is 27993263. The reversal of 27993224 is 42239972.

It is not an unprimeable number, because it can be changed into a prime (27993223) 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, 249884 + ... + 249995.

It is an arithmetic number, because the mean of its divisors is an integer number (3749100).

Almost surely, 2^27993224 is an apocalyptic number.

It is an amenable number.

27993224 is an abundant number, since it is smaller than the sum of its proper divisors (31992376).

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

27993224 is a wasteful number, since it uses less digits than its factorization.

27993224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499892 (or 499888 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 27993224 is about 5290.8623115708. The cubic root of 27993224 is about 303.6344000603.

The spelling of 27993224 in words is "twenty-seven million, nine hundred ninety-three thousand, two hundred twenty-four".