27724081 has 8 divisors (see below), whose sum is σ = 34565184. Its totient is φ = 21603120.

The previous prime is 27724069. The next prime is 27724111. The reversal of 27724081 is 18042772.

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

It is not a de Polignac number, because 27724081 - 2⁵ = 27724049 is a prime.

It is a super-2 number, since 2×27724081² = 1537249334589122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27724001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179950 + ... + 180103.

It is an arithmetic number, because the mean of its divisors is an integer number (4320648).

Almost surely, 2^27724081 is an apocalyptic number.

It is an amenable number.

27724081 is a deficient number, since it is larger than the sum of its proper divisors (6841103).

27724081 is a wasteful number, since it uses less digits than its factorization.

27724081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360071.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 27724081 is about 5265.3661790990. The cubic root of 27724081 is about 302.6581592169.

The spelling of 27724081 in words is "twenty-seven million, seven hundred twenty-four thousand, eighty-one".