27788896 has 48 divisors (see below), whose sum is σ = 57214080. Its totient is φ = 13271040.

The previous prime is 27788881. The next prime is 27788923. The reversal of 27788896 is 69888772.

It is a congruent number.

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, 108000 + ... + 108256.

It is an arithmetic number, because the mean of its divisors is an integer number (1191960).

Almost surely, 2^27788896 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 27788896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28607040).

27788896 is an abundant number, since it is smaller than the sum of its proper divisors (29425184).

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

27788896 is a wasteful number, since it uses less digits than its factorization.

27788896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 399 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 55.

The square root of 27788896 is about 5271.5174285968. The cubic root of 27788896 is about 302.8938330500.

The spelling of 27788896 in words is "twenty-seven million, seven hundred eighty-eight thousand, eight hundred ninety-six".