28102534500 has 192 divisors, whose sum is σ = 83966658048. Its totient is φ = 7300800000.

The previous prime is 28102534487. The next prime is 28102534517. The reversal of 28102534500 is 543520182.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12003330 + ... + 12005670.

It is an arithmetic number, because the mean of its divisors is an integer number (437326344).

Almost surely, 2^28102534500 is an apocalyptic number.

28102534500 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 28102534500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41983329024).

28102534500 is an abundant number, since it is smaller than the sum of its proper divisors (55864123548).

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

28102534500 is a wasteful number, since it uses less digits than its factorization.

28102534500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 28102534500 in words is "twenty-eight billion, one hundred two million, five hundred thirty-four thousand, five hundred".