27984646 has 16 divisors (see below), whose sum is σ = 43029504. Its totient is φ = 13643784.

The previous prime is 27984643. The next prime is 27984647. The reversal of 27984646 is 64648972.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27984596 and 27984605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27984641) 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, 43201 + ... + 43843.

It is an arithmetic number, because the mean of its divisors is an integer number (2689344).

Almost surely, 2^27984646 is an apocalyptic number.

27984646 is a deficient number, since it is larger than the sum of its proper divisors (15044858).

27984646 is a wasteful number, since it uses less digits than its factorization.

27984646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its digits is 580608, while the sum is 46.

The square root of 27984646 is about 5290.0516065536. The cubic root of 27984646 is about 303.6033825306.

The spelling of 27984646 in words is "twenty-seven million, nine hundred eighty-four thousand, six hundred forty-six".