27859845 has 16 divisors (see below), whose sum is σ = 48004992. Its totient is φ = 13715520.

The previous prime is 27859837. The next prime is 27859879. The reversal of 27859845 is 54895872.

It is not a de Polignac number, because 27859845 - 2³ = 27859837 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27859794 and 27859803.

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, 71241 + ... + 71630.

It is an arithmetic number, because the mean of its divisors is an integer number (3000312).

Almost surely, 2^27859845 is an apocalyptic number.

It is an amenable number.

27859845 is a deficient number, since it is larger than the sum of its proper divisors (20145147).

27859845 is a wasteful number, since it uses less digits than its factorization.

27859845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142892.

The product of its digits is 806400, while the sum is 48.

The square root of 27859845 is about 5278.2426052617. The cubic root of 27859845 is about 303.1513909782.

The spelling of 27859845 in words is "twenty-seven million, eight hundred fifty-nine thousand, eight hundred forty-five".