27688448 has 40 divisors (see below), whose sum is σ = 56715120. Its totient is φ = 13496320.

The previous prime is 27688447. The next prime is 27688457. The reversal of 27688448 is 84488672.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27688447) 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 3 ways as a sum of consecutive naturals, for example, 20333 + ... + 21651.

It is an arithmetic number, because the mean of its divisors is an integer number (1417878).

Almost surely, 2^27688448 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 27688448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28357560).

27688448 is an abundant number, since it is smaller than the sum of its proper divisors (29026672).

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

27688448 is an equidigital number, since it uses as much as digits as its factorization.

27688448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1362 counting only the distinct ones).

The product of its digits is 688128, while the sum is 47.

The square root of 27688448 is about 5261.9813758697. The cubic root of 27688448 is about 302.5284375515.

The spelling of 27688448 in words is "twenty-seven million, six hundred eighty-eight thousand, four hundred forty-eight".