27879228 has 60 divisors (see below), whose sum is σ = 78499960. Its totient is φ = 8576928.

The previous prime is 27879227. The next prime is 27879233. The reversal of 27879228 is 82297872.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27879227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 903 + ... + 7521.

Almost surely, 2^27879228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27879228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39249980).

27879228 is an abundant number, since it is smaller than the sum of its proper divisors (50620732).

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

27879228 is a wasteful number, since it uses less digits than its factorization.

27879228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6648 (or 6637 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 27879228 is about 5280.0784085087. The cubic root of 27879228 is about 303.2216787733.

The spelling of 27879228 in words is "twenty-seven million, eight hundred seventy-nine thousand, two hundred twenty-eight".