27997338 has 8 divisors (see below), whose sum is σ = 55994688. Its totient is φ = 9332444.

The previous prime is 27997337. The next prime is 27997349. The reversal of 27997338 is 83379972.

It is a sphenic number, since it is the product of 3 distinct primes.

27997338 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27997331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333106 + ... + 2333117.

It is an arithmetic number, because the mean of its divisors is an integer number (6999336).

Almost surely, 2^27997338 is an apocalyptic number.

27997338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27997338 is a wasteful number, since it uses less digits than its factorization.

27997338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666228.

The product of its digits is 571536, while the sum is 48.

The square root of 27997338 is about 5291.2510807937. The cubic root of 27997338 is about 303.6492737875.

The spelling of 27997338 in words is "twenty-seven million, nine hundred ninety-seven thousand, three hundred thirty-eight".