27281328 has 80 divisors (see below), whose sum is σ = 75888000. Its totient is φ = 8414208.

The previous prime is 27281327. The next prime is 27281329. The reversal of 27281328 is 82318272.

It is an interprime number because it is at equal distance from previous prime (27281327) and next prime (27281329).

It is not an unprimeable number, because it can be changed into a prime (27281323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54423 + ... + 54921.

It is an arithmetic number, because the mean of its divisors is an integer number (948600).

Almost surely, 2^27281328 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 27281328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37944000).

27281328 is an abundant number, since it is smaller than the sum of its proper divisors (48606672).

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

27281328 is a wasteful number, since it uses less digits than its factorization.

27281328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 588 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 27281328 is about 5223.1530707036. The cubic root of 27281328 is about 301.0383574551.

The spelling of 27281328 in words is "twenty-seven million, two hundred eighty-one thousand, three hundred twenty-eight".