27081616 has 15 divisors (see below), whose sum is σ = 52510993. Its totient is φ = 13530400.

The previous prime is 27081611. The next prime is 27081617. The reversal of 27081616 is 61618072.

The square root of 27081616 is 5204.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 41616 + 27040000 = 204^2 + 5200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27081611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 20166 + ... + 21466.

Almost surely, 2^27081616 is an apocalyptic number.

27081616 is the 5204-th square number.

It is an amenable number.

27081616 is a deficient number, since it is larger than the sum of its proper divisors (25429377).

27081616 is an frugal number, since it uses more digits than its factorization.

27081616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The cubic root of 27081616 is about 300.3019774116.

Adding to 27081616 its reverse (61618072), we get a palindrome (88699688).

The spelling of 27081616 in words is "twenty-seven million, eighty-one thousand, six hundred sixteen".