27388648 has 48 divisors (see below), whose sum is σ = 60380100. Its totient is φ = 11612160.

The previous prime is 27388631. The next prime is 27388657. The reversal of 27388648 is 84688372.

It can be written as a sum of positive squares in 2 ways, for example, as 24423364 + 2965284 = 4942^2 + 1722^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27388598 and 27388607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42408 + ... + 43048.

Almost surely, 2^27388648 is an apocalyptic number.

27388648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27388648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30190050).

27388648 is an abundant number, since it is smaller than the sum of its proper divisors (32991452).

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

27388648 is a wasteful number, since it uses less digits than its factorization.

27388648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 759 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 27388648 is about 5233.4164749234. The cubic root of 27388648 is about 301.4325851471.

The spelling of 27388648 in words is "twenty-seven million, three hundred eighty-eight thousand, six hundred forty-eight".