27956 has 12 divisors (see below), whose sum is σ = 50820. Its totient is φ = 13440.

The previous prime is 27953. The next prime is 27961. The reversal of 27956 is 65972.

It can be written as a sum of positive squares in 2 ways, for example, as 17956 + 10000 = 134^2 + 100^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27953) 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, 5 + ... + 236.

It is an arithmetic number, because the mean of its divisors is an integer number (4235).

2²⁷⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

27956 is a deficient number, since it is larger than the sum of its proper divisors (22864).

27956 is a wasteful number, since it uses less digits than its factorization.

27956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 272 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 27956 is about 167.2004784682. The cubic root of 27956 is about 30.3499754376.

The spelling of 27956 in words is "twenty-seven thousand, nine hundred fifty-six".