27748319 has 2 divisors, whose sum is σ = 27748320. Its totient is φ = 27748318.

The previous prime is 27748313. The next prime is 27748321. The reversal of 27748319 is 91384772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27748319 is a prime.

It is a super-2 number, since 2×27748319² = 1539938414651522, which contains 22 as substring.

Together with 27748321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27748313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13874159 + 13874160.

It is an arithmetic number, because the mean of its divisors is an integer number (13874160).

Almost surely, 2^27748319 is an apocalyptic number.

27748319 is a deficient number, since it is larger than the sum of its proper divisors (1).

27748319 is an equidigital number, since it uses as much as digits as its factorization.

27748319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 27748319 is about 5267.6673205509. The cubic root of 27748319 is about 302.7463339665.

The spelling of 27748319 in words is "twenty-seven million, seven hundred forty-eight thousand, three hundred nineteen".