28005275000 has 48 divisors (see below), whose sum is σ = 65633221080. Its totient is φ = 11202100000.

The previous prime is 28005274987. The next prime is 28005275021. The reversal of 28005275000 is 57250082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 535106 + ... + 585105.

Almost surely, 2^28005275000 is an apocalyptic number.

28005275000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28005275000 is an abundant number, since it is smaller than the sum of its proper divisors (37627946080).

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

28005275000 is an equidigital number, since it uses as much as digits as its factorization.

28005275000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120242 (or 1120218 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The spelling of 28005275000 in words is "twenty-eight billion, five million, two hundred seventy-five thousand".