27945673 has 8 divisors (see below), whose sum is σ = 31995392. Its totient is φ = 23910336.

The previous prime is 27945661. The next prime is 27945689. The reversal of 27945673 is 37654972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27945673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27925673) 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, 961 + ... + 7537.

It is an arithmetic number, because the mean of its divisors is an integer number (3999424).

Almost surely, 2^27945673 is an apocalyptic number.

It is an amenable number.

27945673 is a deficient number, since it is larger than the sum of its proper divisors (4049719).

27945673 is an equidigital number, since it uses as much as digits as its factorization.

27945673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7191.

The product of its digits is 317520, while the sum is 43.

The square root of 27945673 is about 5286.3667107003. The cubic root of 27945673 is about 303.4623786426.

The spelling of 27945673 in words is "twenty-seven million, nine hundred forty-five thousand, six hundred seventy-three".