27208728 has 96 divisors (see below), whose sum is σ = 77641200. Its totient is φ = 8596224.

The previous prime is 27208711. The next prime is 27208729. The reversal of 27208728 is 82780272.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 27208692 and 27208701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27208729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173226 + ... + 173382.

Almost surely, 2^27208728 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 27208728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38820600).

27208728 is an abundant number, since it is smaller than the sum of its proper divisors (50432472).

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

27208728 is a wasteful number, since it uses less digits than its factorization.

27208728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 27208728 is about 5216.1986158504. The cubic root of 27208728 is about 300.7710830716.

The spelling of 27208728 in words is "twenty-seven million, two hundred eight thousand, seven hundred twenty-eight".