27728192 has 14 divisors (see below), whose sum is σ = 55023258. Its totient is φ = 13864064.

The previous prime is 27728191. The next prime is 27728203. The reversal of 27728192 is 29182772.

It can be written as a sum of positive squares in only one way, i.e., 27709696 + 18496 = 5264^2 + 136^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216563 + ... + 216690.

Almost surely, 2^27728192 is an apocalyptic number.

It is an amenable number.

27728192 is a deficient number, since it is larger than the sum of its proper divisors (27295066).

27728192 is an equidigital number, since it uses as much as digits as its factorization.

27728192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433265 (or 433255 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 27728192 is about 5265.7565458346. The cubic root of 27728192 is about 302.6731181281.

The spelling of 27728192 in words is "twenty-seven million, seven hundred twenty-eight thousand, one hundred ninety-two".