28868892580 has 96 divisors (see below), whose sum is σ = 68784791040. Its totient is φ = 10084538880.

The previous prime is 28868892551. The next prime is 28868892583. The reversal of 28868892580 is 8529886882.

It is not an unprimeable number, because it can be changed into a prime (28868892583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 620614 + ... + 665506.

It is an arithmetic number, because the mean of its divisors is an integer number (716508240).

Almost surely, 2^28868892580 is an apocalyptic number.

28868892580 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 28868892580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34392395520).

28868892580 is an abundant number, since it is smaller than the sum of its proper divisors (39915898460).

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

28868892580 is a wasteful number, since it uses less digits than its factorization.

28868892580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45029 (or 45027 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 64.

The spelling of 28868892580 in words is "twenty-eight billion, eight hundred sixty-eight million, eight hundred ninety-two thousand, five hundred eighty".