28789800 has 96 divisors (see below), whose sum is σ = 96139680. Its totient is φ = 7084800.

The previous prime is 28789799. The next prime is 28789841. The reversal of 28789800 is 898782.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5955 + ... + 9645.

It is an arithmetic number, because the mean of its divisors is an integer number (1001455).

Almost surely, 2^28789800 is an apocalyptic number.

28789800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28789800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48069840).

28789800 is an abundant number, since it is smaller than the sum of its proper divisors (67349880).

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

28789800 is a wasteful number, since it uses less digits than its factorization.

28789800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 28789800 is about 5365.6127329505. The cubic root of 28789800 is about 306.4875818502.

The spelling of 28789800 in words is "twenty-eight million, seven hundred eighty-nine thousand, eight hundred".