27979386 has 8 divisors (see below), whose sum is σ = 55958784. Its totient is φ = 9326460.

The previous prime is 27979379. The next prime is 27979387. The reversal of 27979386 is 68397972.

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

27979386 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (27979387) 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, 2331610 + ... + 2331621.

It is an arithmetic number, because the mean of its divisors is an integer number (6994848).

Almost surely, 2^27979386 is an apocalyptic number.

27979386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27979386 is a wasteful number, since it uses less digits than its factorization.

27979386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663236.

The product of its digits is 1143072, while the sum is 51.

The square root of 27979386 is about 5289.5544235786. The cubic root of 27979386 is about 303.5843595533.

The spelling of 27979386 in words is "twenty-seven million, nine hundred seventy-nine thousand, three hundred eighty-six".