27980679 has 8 divisors (see below), whose sum is σ = 38594160. Its totient is φ = 18010496.

The previous prime is 27980669. The next prime is 27980699. The reversal of 27980679 is 97608972.

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 27980679 - 2⁵ = 27980647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27980669) 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, 160722 + ... + 160895.

It is an arithmetic number, because the mean of its divisors is an integer number (4824270).

Almost surely, 2^27980679 is an apocalyptic number.

27980679 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

27980679 is a deficient number, since it is larger than the sum of its proper divisors (10613481).

27980679 is a wasteful number, since it uses less digits than its factorization.

27980679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321649.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 27980679 is about 5289.6766441816. The cubic root of 27980679 is about 303.5890359548.

The spelling of 27980679 in words is "twenty-seven million, nine hundred eighty thousand, six hundred seventy-nine".