27045816 has 128 divisors (see below), whose sum is σ = 83904000. Its totient is φ = 7091712.

The previous prime is 27045787. The next prime is 27045829. The reversal of 27045816 is 61854072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117990 + ... + 118218.

It is an arithmetic number, because the mean of its divisors is an integer number (655500).

Almost surely, 2^27045816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27045816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41952000).

27045816 is an abundant number, since it is smaller than the sum of its proper divisors (56858184).

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

27045816 is a wasteful number, since it uses less digits than its factorization.

27045816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 27045816 is about 5200.5592007014. The cubic root of 27045816 is about 300.1695929982.

Adding to 27045816 its reverse (61854072), we get a palindrome (88899888).

The spelling of 27045816 in words is "twenty-seven million, forty-five thousand, eight hundred sixteen".