27949855 has 16 divisors (see below), whose sum is σ = 35481600. Its totient is φ = 21077280.

The previous prime is 27949841. The next prime is 27949861. The reversal of 27949855 is 55894972.

It is a de Polignac number, because none of the positive numbers 2^k-27949855 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27949799 and 27949808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22090 + ... + 23320.

It is an arithmetic number, because the mean of its divisors is an integer number (2217600).

Almost surely, 2^27949855 is an apocalyptic number.

27949855 is a deficient number, since it is larger than the sum of its proper divisors (7531745).

27949855 is a wasteful number, since it uses less digits than its factorization.

27949855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494.

The product of its digits is 907200, while the sum is 49.

The square root of 27949855 is about 5286.7622416750. The cubic root of 27949855 is about 303.4775153493.

The spelling of 27949855 in words is "twenty-seven million, nine hundred forty-nine thousand, eight hundred fifty-five".