27808228 has 24 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 11782848.

The previous prime is 27808223. The next prime is 27808241. The reversal of 27808228 is 82280872.

It is not an unprimeable number, because it can be changed into a prime (27808223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3088 + ... + 8071.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^27808228 is an apocalyptic number.

27808228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27808228 is an abundant number, since it is smaller than the sum of its proper divisors (28438172).

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

27808228 is a wasteful number, since it uses less digits than its factorization.

27808228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11259 (or 11257 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 27808228 is about 5273.3507374344. The cubic root of 27808228 is about 302.9640551783.

The spelling of 27808228 in words is "twenty-seven million, eight hundred eight thousand, two hundred twenty-eight".