27933971 has 8 divisors (see below), whose sum is σ = 31666320. Its totient is φ = 24427872.

The previous prime is 27933967. The next prime is 27933973. The reversal of 27933971 is 17933972.

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

It is a cyclic number.

It is not a de Polignac number, because 27933971 - 2² = 27933967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27933973) 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 7 ways as a sum of consecutive naturals, for example, 56300 + ... + 56793.

It is an arithmetic number, because the mean of its divisors is an integer number (3958290).

Almost surely, 2^27933971 is an apocalyptic number.

27933971 is a deficient number, since it is larger than the sum of its proper divisors (3732349).

27933971 is a wasteful number, since it uses less digits than its factorization.

27933971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113125.

The product of its digits is 71442, while the sum is 41.

The square root of 27933971 is about 5285.2597854789. The cubic root of 27933971 is about 303.4200153456.

Subtracting from 27933971 its reverse (17933972), we obtain a palindrome (9999999).

The spelling of 27933971 in words is "twenty-seven million, nine hundred thirty-three thousand, nine hundred seventy-one".