27984679 has 8 divisors (see below), whose sum is σ = 28323680. Its totient is φ = 27648000.

The previous prime is 27984667. The next prime is 27984707. The reversal of 27984679 is 97648972.

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 27984679 - 2⁵ = 27984647 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 (27984659) 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, 36007 + ... + 36775.

It is an arithmetic number, because the mean of its divisors is an integer number (3540460).

Almost surely, 2^27984679 is an apocalyptic number.

27984679 is a deficient number, since it is larger than the sum of its proper divisors (339001).

27984679 is a wasteful number, since it uses less digits than its factorization.

27984679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its digits is 1524096, while the sum is 52.

The square root of 27984679 is about 5290.0547256148. The cubic root of 27984679 is about 303.6035018688.

The spelling of 27984679 in words is "twenty-seven million, nine hundred eighty-four thousand, six hundred seventy-nine".