27970 has 8 divisors (see below), whose sum is σ = 50364. Its totient is φ = 11184.

The previous prime is 27967. The next prime is 27983. The reversal of 27970 is 7972.

It can be written as a sum of positive squares in 2 ways, for example, as 27889 + 81 = 167^2 + 9^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389 + ... + 1408.

2²⁷⁹⁷⁰ is an apocalyptic number.

27970 is a deficient number, since it is larger than the sum of its proper divisors (22394).

27970 is a wasteful number, since it uses less digits than its factorization.

27970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 27970 is about 167.2423391370. The cubic root of 27970 is about 30.3550408826.

The spelling of 27970 in words is "twenty-seven thousand, nine hundred seventy".