27968219 has 2 divisors, whose sum is σ = 27968220. Its totient is φ = 27968218.

The previous prime is 27968197. The next prime is 27968327. The reversal of 27968219 is 91286972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27968219 - 2⁸ = 27967963 is a prime.

It is a super-2 number, since 2×27968219² = 1564442548063922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27968219.

It is not a weakly prime, because it can be changed into another prime (27968119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13984109 + 13984110.

It is an arithmetic number, because the mean of its divisors is an integer number (13984110).

Almost surely, 2^27968219 is an apocalyptic number.

27968219 is a deficient number, since it is larger than the sum of its proper divisors (1).

27968219 is an equidigital number, since it uses as much as digits as its factorization.

27968219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 27968219 is about 5288.4987472817. The cubic root of 27968219 is about 303.5439657951.

The spelling of 27968219 in words is "twenty-seven million, nine hundred sixty-eight thousand, two hundred nineteen".