27906 has 8 divisors (see below), whose sum is σ = 55824. Its totient is φ = 9300.

The previous prime is 27901. The next prime is 27917. The reversal of 27906 is 60972.

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

27906 is an admirable number.

It is a Curzon number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (27901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2320 + ... + 2331.

It is an arithmetic number, because the mean of its divisors is an integer number (6978).

2²⁷⁹⁰⁶ is an apocalyptic number.

27906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27912).

27906 is a wasteful number, since it uses less digits than its factorization.

27906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 27906 is about 167.0508904496. The cubic root of 27906 is about 30.3318707449.

The spelling of 27906 in words is "twenty-seven thousand, nine hundred six".