28558285080 has 128 divisors (see below), whose sum is σ = 92345400000. Its totient is φ = 7023624192.

The previous prime is 28558285073. The next prime is 28558285111. The reversal of 28558285080 is 8058285582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1941112 + ... + 1955768.

Almost surely, 2^28558285080 is an apocalyptic number.

28558285080 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 28558285080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46172700000).

28558285080 is an abundant number, since it is smaller than the sum of its proper divisors (63787114920).

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

28558285080 is a wasteful number, since it uses less digits than its factorization.

28558285080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15933 (or 15929 counting only the distinct ones).

The product of its (nonzero) digits is 2048000, while the sum is 51.

The spelling of 28558285080 in words is "twenty-eight billion, five hundred fifty-eight million, two hundred eighty-five thousand, eighty".