28050000500 has 48 divisors (see below), whose sum is σ = 61389619200. Its totient is φ = 11196480800.

The previous prime is 28050000457. The next prime is 28050000521. The reversal of 28050000500 is 500005082.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 180941 + ... + 298059.

It is an arithmetic number, because the mean of its divisors is an integer number (1278950400).

Almost surely, 2^28050000500 is an apocalyptic number.

28050000500 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 28050000500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30694809600).

28050000500 is an abundant number, since it is smaller than the sum of its proper divisors (33339618700).

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

28050000500 is a wasteful number, since it uses less digits than its factorization.

28050000500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117617 (or 117605 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 28050000500 its reverse (500005082), we get a palindrome (28550005582).

The spelling of 28050000500 in words is "twenty-eight billion, fifty million, five hundred", and thus it is an aban number.