27768794 has 4 divisors (see below), whose sum is σ = 41653194. Its totient is φ = 13884396.

The previous prime is 27768791. The next prime is 27768799. The reversal of 27768794 is 49786772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16120225 + 11648569 = 4015^2 + 3413^2 .

It is a super-2 number, since 2×27768794² = 1542211840428872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27768791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942197 + ... + 6942200.

Almost surely, 2^27768794 is an apocalyptic number.

27768794 is a deficient number, since it is larger than the sum of its proper divisors (13884400).

27768794 is a wasteful number, since it uses less digits than its factorization.

27768794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884399.

The product of its digits is 1185408, while the sum is 50.

The square root of 27768794 is about 5269.6104220331. The cubic root of 27768794 is about 302.8207794031.

The spelling of 27768794 in words is "twenty-seven million, seven hundred sixty-eight thousand, seven hundred ninety-four".