28750127500 has 30 divisors (see below), whose sum is σ = 62870784284. Its totient is φ = 11500050000.

The previous prime is 28750127447. The next prime is 28750127509. The reversal of 28750127500 is 572105782.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28750127500.

It is not an unprimeable number, because it can be changed into a prime (28750127509) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5747526 + ... + 5752525.

Almost surely, 2^28750127500 is an apocalyptic number.

28750127500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28750127500 is an abundant number, since it is smaller than the sum of its proper divisors (34120656784).

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

28750127500 is a wasteful number, since it uses less digits than its factorization.

28750127500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500075 (or 11500058 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 37.

The spelling of 28750127500 in words is "twenty-eight billion, seven hundred fifty million, one hundred twenty-seven thousand, five hundred".