27981088 has 12 divisors (see below), whose sum is σ = 55087830. Its totient is φ = 13990528.

The previous prime is 27981077. The next prime is 27981097. The reversal of 27981088 is 88018972.

It can be written as a sum of positive squares in only one way, i.e., 17405584 + 10575504 = 4172^2 + 3252^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437173 + ... + 437236.

Almost surely, 2^27981088 is an apocalyptic number.

It is an amenable number.

27981088 is a deficient number, since it is larger than the sum of its proper divisors (27106742).

27981088 is an equidigital number, since it uses as much as digits as its factorization.

27981088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874419 (or 874411 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 27981088 is about 5289.7153042484. The cubic root of 27981088 is about 303.5905151578.

The spelling of 27981088 in words is "twenty-seven million, nine hundred eighty-one thousand, eighty-eight".