27019988 has 12 divisors (see below), whose sum is σ = 47327700. Its totient is φ = 13497792.

The previous prime is 27019981. The next prime is 27020023. The reversal of 27019988 is 88991072.

It can be written as a sum of positive squares in 2 ways, for example, as 26399044 + 620944 = 5138^2 + 788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27019981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3488 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (3943975).

Almost surely, 2^27019988 is an apocalyptic number.

It is an amenable number.

27019988 is a deficient number, since it is larger than the sum of its proper divisors (20307712).

27019988 is a wasteful number, since it uses less digits than its factorization.

27019988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106 (or 6104 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 27019988 is about 5198.0754130736. The cubic root of 27019988 is about 300.0740113692.

The spelling of 27019988 in words is "twenty-seven million, nineteen thousand, nine hundred eighty-eight".