27328672 has 72 divisors (see below), whose sum is σ = 64853460. Its totient is φ = 11289600.

The previous prime is 27328649. The next prime is 27328687. The reversal of 27328672 is 27682372.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26255376 + 1073296 = 5124^2 + 1036^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45172 + ... + 45772.

Almost surely, 2^27328672 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 27328672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32426730).

27328672 is an abundant number, since it is smaller than the sum of its proper divisors (37524788).

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

27328672 is a wasteful number, since it uses less digits than its factorization.

27328672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 639 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The square root of 27328672 is about 5227.6832344739. The cubic root of 27328672 is about 301.2123974117.

The spelling of 27328672 in words is "twenty-seven million, three hundred twenty-eight thousand, six hundred seventy-two".