28200500280 has 192 divisors, whose sum is σ = 94516269120. Its totient is φ = 7287552000.

The previous prime is 28200500227. The next prime is 28200500351. The reversal of 28200500280 is 8200500282.

28200500280 is a `hidden beast` number, since 2 + 82 + 0 + 0 + 500 + 2 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2222434 + ... + 2235086.

It is an arithmetic number, because the mean of its divisors is an integer number (492272235).

Almost surely, 2^28200500280 is an apocalyptic number.

28200500280 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 28200500280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47258134560).

28200500280 is an abundant number, since it is smaller than the sum of its proper divisors (66315768840).

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

28200500280 is a wasteful number, since it uses less digits than its factorization.

28200500280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12862 (or 12855 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The spelling of 28200500280 in words is "twenty-eight billion, two hundred million, five hundred thousand, two hundred eighty".