27081516 has 144 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 6814080.

The previous prime is 27081497. The next prime is 27081533. The reversal of 27081516 is 61518072.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 342765 + ... + 342843.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^27081516 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 27081516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41368320).

27081516 is an abundant number, since it is smaller than the sum of its proper divisors (55655124).

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

27081516 is a wasteful number, since it uses less digits than its factorization.

27081516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 27081516 is about 5203.9903919973. The cubic root of 27081516 is about 300.3016077853.

Adding to 27081516 its reverse (61518072), we get a palindrome (88599588).

It can be divided in two parts, 2708 and 1516, that added together give a palindrome (4224).

The spelling of 27081516 in words is "twenty-seven million, eighty-one thousand, five hundred sixteen".