27856406 has 16 divisors (see below), whose sum is σ = 42448320. Its totient is φ = 13708800.

The previous prime is 27856399. The next prime is 27856417. The reversal of 27856406 is 60465872.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27856406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47990 + ... + 48566.

It is an arithmetic number, because the mean of its divisors is an integer number (2653020).

Almost surely, 2^27856406 is an apocalyptic number.

27856406 is a deficient number, since it is larger than the sum of its proper divisors (14591914).

27856406 is a wasteful number, since it uses less digits than its factorization.

27856406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 27856406 is about 5277.9168238994. The cubic root of 27856406 is about 303.1389168656.

The spelling of 27856406 in words is "twenty-seven million, eight hundred fifty-six thousand, four hundred six".