27009728 has 56 divisors (see below), whose sum is σ = 57058560. Its totient is φ = 12657920.

The previous prime is 27009721. The next prime is 27009737. The reversal of 27009728 is 82790072.

It is not an unprimeable number, because it can be changed into a prime (27009721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86693 + ... + 87003.

Almost surely, 2^27009728 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 27009728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28529280).

27009728 is an abundant number, since it is smaller than the sum of its proper divisors (30048832).

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

27009728 is a wasteful number, since it uses less digits than its factorization.

27009728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 27009728 is about 5197.0884156420. The cubic root of 27009728 is about 300.0360253034.

The spelling of 27009728 in words is "twenty-seven million, nine thousand, seven hundred twenty-eight".