27968249 has 4 divisors (see below), whose sum is σ = 28362240. Its totient is φ = 27574260.

The previous prime is 27968219. The next prime is 27968327. The reversal of 27968249 is 94286972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27968249 - 2¹⁶ = 27902713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27968219) 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, 196889 + ... + 197030.

It is an arithmetic number, because the mean of its divisors is an integer number (7090560).

Almost surely, 2^27968249 is an apocalyptic number.

It is an amenable number.

27968249 is a deficient number, since it is larger than the sum of its proper divisors (393991).

27968249 is an equidigital number, since it uses as much as digits as its factorization.

27968249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393990.

The product of its digits is 435456, while the sum is 47.

The square root of 27968249 is about 5288.5015836246. The cubic root of 27968249 is about 303.5440743268.

The spelling of 27968249 in words is "twenty-seven million, nine hundred sixty-eight thousand, two hundred forty-nine".