27956845 has 16 divisors (see below), whose sum is σ = 40008960. Its totient is φ = 18336384.

The previous prime is 27956843. The next prime is 27956879. The reversal of 27956845 is 54865972.

It is a cyclic number.

It is not a de Polignac number, because 27956845 - 2¹ = 27956843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27956795 and 27956804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27956843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16560 + ... + 18169.

It is an arithmetic number, because the mean of its divisors is an integer number (2500560).

Almost surely, 2^27956845 is an apocalyptic number.

It is an amenable number.

27956845 is a deficient number, since it is larger than the sum of its proper divisors (12052115).

27956845 is a wasteful number, since it uses less digits than its factorization.

27956845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34764.

The product of its digits is 604800, while the sum is 46.

The square root of 27956845 is about 5287.4232854955. The cubic root of 27956845 is about 303.5028122130.

The spelling of 27956845 in words is "twenty-seven million, nine hundred fifty-six thousand, eight hundred forty-five".