27011988 has 48 divisors (see below), whose sum is σ = 71095360. Its totient is φ = 8867232.

The previous prime is 27011987. The next prime is 27012017. The reversal of 27011988 is 88911072.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27011983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5370 + ... + 9102.

Almost surely, 2^27011988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27011988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35547680).

27011988 is an abundant number, since it is smaller than the sum of its proper divisors (44083372).

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

27011988 is a wasteful number, since it uses less digits than its factorization.

27011988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 27011988 is about 5197.3058405293. The cubic root of 27011988 is about 300.0443934304.

The spelling of 27011988 in words is "twenty-seven million, eleven thousand, nine hundred eighty-eight".