27749228 has 24 divisors (see below), whose sum is σ = 52553088. Its totient is φ = 12744576.

The previous prime is 27749207. The next prime is 27749231. The reversal of 27749228 is 82294772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10400 + ... + 12792.

It is an arithmetic number, because the mean of its divisors is an integer number (2189712).

Almost surely, 2^27749228 is an apocalyptic number.

It is an amenable number.

27749228 is a deficient number, since it is larger than the sum of its proper divisors (24803860).

27749228 is a wasteful number, since it uses less digits than its factorization.

27749228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633 (or 2631 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 27749228 is about 5267.7536009195. The cubic root of 27749228 is about 302.7496397933.

The spelling of 27749228 in words is "twenty-seven million, seven hundred forty-nine thousand, two hundred twenty-eight".