27187992 has 96 divisors (see below), whose sum is σ = 81943680. Its totient is φ = 8087040.

The previous prime is 27187991. The next prime is 27188027. The reversal of 27187992 is 29978172.

27187992 is nontrivially palindromic in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27187991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28548 + ... + 29484.

It is an arithmetic number, because the mean of its divisors is an integer number (853580).

Almost surely, 2^27187992 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 27187992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40971840).

27187992 is an abundant number, since it is smaller than the sum of its proper divisors (54755688).

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

27187992 is a wasteful number, since it uses less digits than its factorization.

27187992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 986 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 27187992 is about 5214.2105826290. The cubic root of 27187992 is about 300.6946569310.

The spelling of 27187992 in words is "twenty-seven million, one hundred eighty-seven thousand, nine hundred ninety-two".