27997532 has 24 divisors (see below), whose sum is σ = 51467136. Its totient is φ = 13300848.

The previous prime is 27997523. The next prime is 27997559. The reversal of 27997532 is 23579972.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14063 + ... + 15929.

It is an arithmetic number, because the mean of its divisors is an integer number (2144464).

Almost surely, 2^27997532 is an apocalyptic number.

It is an amenable number.

27997532 is a deficient number, since it is larger than the sum of its proper divisors (23469604).

27997532 is a wasteful number, since it uses less digits than its factorization.

27997532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2055 counting only the distinct ones).

The product of its digits is 238140, while the sum is 44.

The square root of 27997532 is about 5291.2694129103. The cubic root of 27997532 is about 303.6499751378.

The spelling of 27997532 in words is "twenty-seven million, nine hundred ninety-seven thousand, five hundred thirty-two".