27813808 has 40 divisors (see below), whose sum is σ = 61353216. Its totient is φ = 12091200.

The previous prime is 27813787. The next prime is 27813827. The reversal of 27813808 is 80831872.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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, 613 + ... + 7483.

Almost surely, 2^27813808 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 27813808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30676608).

27813808 is an abundant number, since it is smaller than the sum of its proper divisors (33539408).

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

27813808 is a wasteful number, since it uses less digits than its factorization.

27813808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6913 (or 6907 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 27813808 is about 5273.8797862674. The cubic root of 27813808 is about 302.9843180823.

The spelling of 27813808 in words is "twenty-seven million, eight hundred thirteen thousand, eight hundred eight".