28228828080 has 160 divisors (see below), whose sum is σ = 88409216448. Its totient is φ = 7450624000.

The previous prime is 28228828051. The next prime is 28228828081. The reversal of 28228828080 is 8082882282.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (28228828081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13183810 + ... + 13185950.

Almost surely, 2^28228828080 is an apocalyptic number.

28228828080 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 28228828080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44204608224).

28228828080 is an abundant number, since it is smaller than the sum of its proper divisors (60180388368).

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

28228828080 is a wasteful number, since it uses less digits than its factorization.

28228828080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695 (or 2689 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 48.

The spelling of 28228828080 in words is "twenty-eight billion, two hundred twenty-eight million, eight hundred twenty-eight thousand, eighty".