27968243 has 4 divisors (see below), whose sum is σ = 28563360. Its totient is φ = 27373128.

The previous prime is 27968219. The next prime is 27968327. The reversal of 27968243 is 34286972.

It is a happy number.

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 27968243 - 2⁸ = 27967987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27968243.

It is not an unprimeable number, because it can be changed into a prime (27964243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297488 + ... + 297581.

It is an arithmetic number, because the mean of its divisors is an integer number (7140840).

Almost surely, 2^27968243 is an apocalyptic number.

27968243 is a deficient number, since it is larger than the sum of its proper divisors (595117).

27968243 is an equidigital number, since it uses as much as digits as its factorization.

27968243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595116.

The product of its digits is 145152, while the sum is 41.

The square root of 27968243 is about 5288.5010163561. The cubic root of 27968243 is about 303.5440526205.

The spelling of 27968243 in words is "twenty-seven million, nine hundred sixty-eight thousand, two hundred forty-three".