27881392 has 120 divisors (see below), whose sum is σ = 70990992. Its totient is φ = 10483200.

The previous prime is 27881363. The next prime is 27881407. The reversal of 27881392 is 29318872.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457042 + ... + 457102.

Almost surely, 2^27881392 is an apocalyptic number.

27881392 is a gapful number since it is divisible by the number (22) 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 27881392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35495496).

27881392 is an abundant number, since it is smaller than the sum of its proper divisors (43109600).

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

27881392 is a wasteful number, since it uses less digits than its factorization.

27881392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 134 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 27881392 is about 5280.2833257317. The cubic root of 27881392 is about 303.2295239778.

The spelling of 27881392 in words is "twenty-seven million, eight hundred eighty-one thousand, three hundred ninety-two".