27685404 has 18 divisors (see below), whose sum is σ = 69982640. Its totient is φ = 9228456.

The previous prime is 27685403. The next prime is 27685423. The reversal of 27685404 is 40458672.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 769039 = 27685404 / (2 + 7 + 6 + 8 + 5 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27685403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 384484 + ... + 384555.

Almost surely, 2^27685404 is an apocalyptic number.

It is an amenable number.

27685404 is an abundant number, since it is smaller than the sum of its proper divisors (42297236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27685404 is a wasteful number, since it uses less digits than its factorization.

27685404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769049 (or 769044 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 27685404 is about 5261.6921232622. The cubic root of 27685404 is about 302.5173507339.

The spelling of 27685404 in words is "twenty-seven million, six hundred eighty-five thousand, four hundred four".