27181028 has 36 divisors (see below), whose sum is σ = 57765120. Its totient is φ = 10960512.

The previous prime is 27181013. The next prime is 27181061. The reversal of 27181028 is 82018172.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6413 + ... + 9771.

Almost surely, 2^27181028 is an apocalyptic number.

27181028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27181028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28882560).

27181028 is an abundant number, since it is smaller than the sum of its proper divisors (30584092).

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

27181028 is a wasteful number, since it uses less digits than its factorization.

27181028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 3385 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 27181028 is about 5213.5427494171. The cubic root of 27181028 is about 300.6689811792.

The spelling of 27181028 in words is "twenty-seven million, one hundred eighty-one thousand, twenty-eight".