28371051500 has 144 divisors (see below), whose sum is σ = 68796550368. Its totient is φ = 10212400000.

The previous prime is 28371051497. The next prime is 28371051539. The reversal of 28371051500 is 515017382.

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, 6108179 + ... + 6112821.

It is an arithmetic number, because the mean of its divisors is an integer number (477753822).

Almost surely, 2^28371051500 is an apocalyptic number.

28371051500 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 28371051500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34398275184).

28371051500 is an abundant number, since it is smaller than the sum of its proper divisors (40425498868).

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

28371051500 is a wasteful number, since it uses less digits than its factorization.

28371051500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4762 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

Adding to 28371051500 its reverse (515017382), we get a palindrome (28886068882).

The spelling of 28371051500 in words is "twenty-eight billion, three hundred seventy-one million, fifty-one thousand, five hundred".