27798828 has 24 divisors (see below), whose sum is σ = 65177280. Its totient is φ = 9221520.

The previous prime is 27798821. The next prime is 27798829. The reversal of 27798828 is 82889772.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27798821) 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, 2958 + ... + 8021.

It is an arithmetic number, because the mean of its divisors is an integer number (2715720).

Almost surely, 2^27798828 is an apocalyptic number.

It is an amenable number.

27798828 is an abundant number, since it is smaller than the sum of its proper divisors (37378452).

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

27798828 is a wasteful number, since it uses less digits than its factorization.

27798828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197 (or 11195 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The square root of 27798828 is about 5272.4593881793. The cubic root of 27798828 is about 302.9299144069.

The spelling of 27798828 in words is "twenty-seven million, seven hundred ninety-eight thousand, eight hundred twenty-eight".