27145116 has 72 divisors (see below), whose sum is σ = 71823024. Its totient is φ = 8636160.

The previous prime is 27145103. The next prime is 27145147. The reversal of 27145116 is 61154172.

It is a happy number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 27145116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78055 + ... + 78401.

It is an arithmetic number, because the mean of its divisors is an integer number (997542).

Almost surely, 2^27145116 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 27145116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35911512).

27145116 is an abundant number, since it is smaller than the sum of its proper divisors (44677908).

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

27145116 is a wasteful number, since it uses less digits than its factorization.

27145116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 446 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 27145116 is about 5210.0975038861. The cubic root of 27145116 is about 300.5365066302.

Adding to 27145116 its reverse (61154172), we get a palindrome (88299288).

It can be divided in two parts, 27145 and 116, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 27145116 in words is "twenty-seven million, one hundred forty-five thousand, one hundred sixteen".