27986973 has 8 divisors (see below), whose sum is σ = 42646848. Its totient is φ = 15992544.

The previous prime is 27986963. The next prime is 27987007. The reversal of 27986973 is 37968972.

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

It is not a de Polignac number, because 27986973 - 2⁴ = 27986957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27986923) 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, 666336 + ... + 666377.

It is an arithmetic number, because the mean of its divisors is an integer number (5330856).

Almost surely, 2^27986973 is an apocalyptic number.

It is an amenable number.

27986973 is a deficient number, since it is larger than the sum of its proper divisors (14659875).

27986973 is a wasteful number, since it uses less digits than its factorization.

27986973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332723.

The product of its digits is 1143072, while the sum is 51.

The square root of 27986973 is about 5290.2715431252. The cubic root of 27986973 is about 303.6117974485.

The spelling of 27986973 in words is "twenty-seven million, nine hundred eighty-six thousand, nine hundred seventy-three".