27680845 has 16 divisors (see below), whose sum is σ = 36702720. Its totient is φ = 19934464.

The previous prime is 27680839. The next prime is 27680857. The reversal of 27680845 is 54808672.

It is a cyclic number.

It is not a de Polignac number, because 27680845 - 2³ = 27680837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27680798 and 27680807.

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 15 ways as a sum of consecutive naturals, for example, 5125 + ... + 9034.

It is an arithmetic number, because the mean of its divisors is an integer number (2293920).

Almost surely, 2^27680845 is an apocalyptic number.

It is an amenable number.

27680845 is a deficient number, since it is larger than the sum of its proper divisors (9021875).

27680845 is a wasteful number, since it uses less digits than its factorization.

27680845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14204.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 27680845 is about 5261.2588797739. The cubic root of 27680845 is about 302.5007444828.

The spelling of 27680845 in words is "twenty-seven million, six hundred eighty thousand, eight hundred forty-five".