27890004 has 24 divisors (see below), whose sum is σ = 66665088. Its totient is φ = 9069760.

The previous prime is 27889973. The next prime is 27890017. The reversal of 27890004 is 40009872.

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, 27852 + ... + 28835.

It is an arithmetic number, because the mean of its divisors is an integer number (2777712).

Almost surely, 2^27890004 is an apocalyptic number.

It is an amenable number.

27890004 is an abundant number, since it is smaller than the sum of its proper divisors (38775084).

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

27890004 is a wasteful number, since it uses less digits than its factorization.

27890004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56735 (or 56733 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 27890004 is about 5281.0987493134. The cubic root of 27890004 is about 303.2607412599.

Adding to 27890004 its reverse (40009872), we get a palindrome (67899876).

The spelling of 27890004 in words is "twenty-seven million, eight hundred ninety thousand, four".