28806768 has 60 divisors (see below), whose sum is σ = 81041688. Its totient is φ = 9552000.

The previous prime is 28806761. The next prime is 28806779. The reversal of 28806768 is 86760882.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28806761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35746 + ... + 36542.

Almost surely, 2^28806768 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 28806768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40520844).

28806768 is an abundant number, since it is smaller than the sum of its proper divisors (52234920).

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

28806768 is a wasteful number, since it uses less digits than its factorization.

28806768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 28806768 is about 5367.1936801274. The cubic root of 28806768 is about 306.5477821057.

The spelling of 28806768 in words is "twenty-eight million, eight hundred six thousand, seven hundred sixty-eight".