27788448 has 24 divisors (see below), whose sum is σ = 72944928. Its totient is φ = 9262784.

The previous prime is 27788441. The next prime is 27788479. The reversal of 27788448 is 84488772.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 27788397 and 27788406.

It is not an unprimeable number, because it can be changed into a prime (27788441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144636 + ... + 144827.

It is an arithmetic number, because the mean of its divisors is an integer number (3039372).

Almost surely, 2^27788448 is an apocalyptic number.

It is an amenable number.

27788448 is an abundant number, since it is smaller than the sum of its proper divisors (45156480).

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

27788448 is a wasteful number, since it uses less digits than its factorization.

27788448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289476 (or 289468 counting only the distinct ones).

The product of its digits is 802816, while the sum is 48.

The square root of 27788448 is about 5271.4749359169. The cubic root of 27788448 is about 302.8922053356.

The spelling of 27788448 in words is "twenty-seven million, seven hundred eighty-eight thousand, four hundred forty-eight".