27997232 has 20 divisors (see below), whose sum is σ = 57436056. Its totient is φ = 13175040.

The previous prime is 27997213. The next prime is 27997237. The reversal of 27997232 is 23279972.

It is a self number, because there is not a number n which added to its sum of digits gives 27997232.

It is not an unprimeable number, because it can be changed into a prime (27997237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51194 + ... + 51737.

Almost surely, 2^27997232 is an apocalyptic number.

It is an amenable number.

27997232 is an abundant number, since it is smaller than the sum of its proper divisors (29438824).

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

27997232 is a wasteful number, since it uses less digits than its factorization.

27997232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102956 (or 102950 counting only the distinct ones).

The product of its digits is 95256, while the sum is 41.

The square root of 27997232 is about 5291.2410642495. The cubic root of 27997232 is about 303.6488905742.

The spelling of 27997232 in words is "twenty-seven million, nine hundred ninety-seven thousand, two hundred thirty-two".