27968997 has 8 divisors (see below), whose sum is σ = 42619456. Its totient is φ = 15982272.

The previous prime is 27968977. The next prime is 27968999. The reversal of 27968997 is 79986972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27968997 - 2⁷ = 27968869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27968999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665908 + ... + 665949.

It is an arithmetic number, because the mean of its divisors is an integer number (5327432).

Almost surely, 2^27968997 is an apocalyptic number.

It is an amenable number.

27968997 is a deficient number, since it is larger than the sum of its proper divisors (14650459).

27968997 is a wasteful number, since it uses less digits than its factorization.

27968997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331867.

The product of its digits is 3429216, while the sum is 57.

The square root of 27968997 is about 5288.5723026163. The cubic root of 27968997 is about 303.5467803590.

The spelling of 27968997 in words is "twenty-seven million, nine hundred sixty-eight thousand, nine hundred ninety-seven".