27968807 has 4 divisors (see below), whose sum is σ = 28563936. Its totient is φ = 27373680.

The previous prime is 27968803. The next prime is 27968813. The reversal of 27968807 is 70886972.

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

It is a cyclic number.

It is not a de Polignac number, because 27968807 - 2² = 27968803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 595081 = 27968807 / (2 + 7 + 9 + 6 + 8 + 8 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27968803) 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 3 ways as a sum of consecutive naturals, for example, 297494 + ... + 297587.

It is an arithmetic number, because the mean of its divisors is an integer number (7140984).

Almost surely, 2^27968807 is an apocalyptic number.

27968807 is a deficient number, since it is larger than the sum of its proper divisors (595129).

27968807 is an equidigital number, since it uses as much as digits as its factorization.

27968807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595128.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 27968807 is about 5288.5543393256. The cubic root of 27968807 is about 303.5460930024.

The spelling of 27968807 in words is "twenty-seven million, nine hundred sixty-eight thousand, eight hundred seven".