27998593 has 8 divisors (see below), whose sum is σ = 32309888. Its totient is φ = 23765184.

The previous prime is 27998591. The next prime is 27998617. The reversal of 27998593 is 39589972.

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

It is a cyclic number.

It is not a de Polignac number, because 27998593 - 2¹ = 27998591 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 27998593.

It is not an unprimeable number, because it can be changed into a prime (27998591) 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, 18696 + ... + 20137.

It is an arithmetic number, because the mean of its divisors is an integer number (4038736).

Almost surely, 2^27998593 is an apocalyptic number.

It is an amenable number.

27998593 is a deficient number, since it is larger than the sum of its proper divisors (4311295).

27998593 is a wasteful number, since it uses less digits than its factorization.

27998593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38943.

The product of its digits is 1224720, while the sum is 52.

The square root of 27998593 is about 5291.3696714556. The cubic root of 27998593 is about 303.6538108158.

The spelling of 27998593 in words is "twenty-seven million, nine hundred ninety-eight thousand, five hundred ninety-three".