27157988 has 48 divisors (see below), whose sum is σ = 56636160. Its totient is φ = 11232000.

The previous prime is 27157987. The next prime is 27158029. The reversal of 27157988 is 88975172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27157987) 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, 44888 + ... + 45488.

It is an arithmetic number, because the mean of its divisors is an integer number (1179920).

Almost surely, 2^27157988 is an apocalyptic number.

It is an amenable number.

27157988 is an abundant number, since it is smaller than the sum of its proper divisors (29478172).

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

27157988 is a wasteful number, since it uses less digits than its factorization.

27157988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 706 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The square root of 27157988 is about 5211.3326510596. The cubic root of 27157988 is about 300.5840031375.

The spelling of 27157988 in words is "twenty-seven million, one hundred fifty-seven thousand, nine hundred eighty-eight".