27945957 has 8 divisors (see below), whose sum is σ = 40127584. Its totient is φ = 17197488.

The previous prime is 27945877. The next prime is 27945959. The reversal of 27945957 is 75954972.

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

It is not a de Polignac number, because 27945957 - 2¹² = 27941861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27945959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358243 + ... + 358320.

It is an arithmetic number, because the mean of its divisors is an integer number (5015948).

Almost surely, 2^27945957 is an apocalyptic number.

It is an amenable number.

27945957 is a deficient number, since it is larger than the sum of its proper divisors (12181627).

27945957 is a wasteful number, since it uses less digits than its factorization.

27945957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716579.

The product of its digits is 793800, while the sum is 48.

The square root of 27945957 is about 5286.3935721813. The cubic root of 27945957 is about 303.4634066255.

The spelling of 27945957 in words is "twenty-seven million, nine hundred forty-five thousand, nine hundred fifty-seven".