27933945 has 32 divisors (see below), whose sum is σ = 49695744. Its totient is φ = 13305600.

The previous prime is 27933881. The next prime is 27933947. The reversal of 27933945 is 54933972.

It is not a de Polignac number, because 27933945 - 2⁶ = 27933881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27933897 and 27933906.

It is not an unprimeable number, because it can be changed into a prime (27933947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3735 + ... + 8355.

It is an arithmetic number, because the mean of its divisors is an integer number (1552992).

Almost surely, 2^27933945 is an apocalyptic number.

It is an amenable number.

27933945 is a deficient number, since it is larger than the sum of its proper divisors (21761799).

27933945 is a wasteful number, since it uses less digits than its factorization.

27933945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673.

The product of its digits is 204120, while the sum is 42.

The square root of 27933945 is about 5285.2573258073. The cubic root of 27933945 is about 303.4199212078.

The spelling of 27933945 in words is "twenty-seven million, nine hundred thirty-three thousand, nine hundred forty-five".