28682888 has 32 divisors (see below), whose sum is σ = 58258200. Its totient is φ = 13160448.

The previous prime is 28682887. The next prime is 28682897. The reversal of 28682888 is 88828682.

It can be written as a sum of positive squares in 4 ways, for example, as 8773444 + 19909444 = 2962^2 + 4462^2 .

It is not an unprimeable number, because it can be changed into a prime (28682887) 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, 19358 + ... + 20786.

Almost surely, 2^28682888 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 28682888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29129100).

28682888 is an abundant number, since it is smaller than the sum of its proper divisors (29575312).

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

28682888 is a wasteful number, since it uses less digits than its factorization.

28682888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1637 counting only the distinct ones).

The product of its digits is 786432, while the sum is 50.

The square root of 28682888 is about 5355.6407646518. The cubic root of 28682888 is about 306.1077268902.

The spelling of 28682888 in words is "twenty-eight million, six hundred eighty-two thousand, eight hundred eighty-eight".