27860012 has 18 divisors (see below), whose sum is σ = 49469868. Its totient is φ = 13728672.

The previous prime is 27860011. The next prime is 27860017. The reversal of 27860012 is 21006872.

It is not an unprimeable number, because it can be changed into a prime (27860011) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 20663 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (2748326).

Almost surely, 2^27860012 is an apocalyptic number.

It is an amenable number.

27860012 is a deficient number, since it is larger than the sum of its proper divisors (21609856).

27860012 is a wasteful number, since it uses less digits than its factorization.

27860012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 27860012 is about 5278.2584248974. The cubic root of 27860012 is about 303.1519967028.

Adding to 27860012 its reverse (21006872), we get a palindrome (48866884).

The spelling of 27860012 in words is "twenty-seven million, eight hundred sixty thousand, twelve".