27764385 has 16 divisors (see below), whose sum is σ = 48461760. Its totient is φ = 13461440.

The previous prime is 27764353. The next prime is 27764389. The reversal of 27764385 is 58346772.

It is not a de Polignac number, because 27764385 - 2⁵ = 27764353 is a prime.

It is a super-2 number, since 2×27764385² = 1541722148856450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (27764389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83970 + ... + 84299.

It is an arithmetic number, because the mean of its divisors is an integer number (3028860).

Almost surely, 2^27764385 is an apocalyptic number.

It is an amenable number.

27764385 is a deficient number, since it is larger than the sum of its proper divisors (20697375).

27764385 is a wasteful number, since it uses less digits than its factorization.

27764385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168288.

The product of its digits is 282240, while the sum is 42.

The square root of 27764385 is about 5269.1920633053. The cubic root of 27764385 is about 302.8047517297.

The spelling of 27764385 in words is "twenty-seven million, seven hundred sixty-four thousand, three hundred eighty-five".