27798785 has 16 divisors (see below), whose sum is σ = 39355392. Its totient is φ = 18446400.

The previous prime is 27798763. The next prime is 27798787. The reversal of 27798785 is 58789772.

It is not a de Polignac number, because 27798785 - 2¹⁶ = 27733249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27798787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11726 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (2459712).

Almost surely, 2^27798785 is an apocalyptic number.

It is an amenable number.

27798785 is a deficient number, since it is larger than the sum of its proper divisors (11556607).

27798785 is a wasteful number, since it uses less digits than its factorization.

27798785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25664.

The product of its digits is 1975680, while the sum is 53.

The square root of 27798785 is about 5272.4553103843. The cubic root of 27798785 is about 302.9297582133.

The spelling of 27798785 in words is "twenty-seven million, seven hundred ninety-eight thousand, seven hundred eighty-five".