28125718000 has 80 divisors (see below), whose sum is σ = 72008542944. Its totient is φ = 10588492800.

The previous prime is 28125717979. The next prime is 28125718003. The reversal of 28125718000 is 81752182.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28125718003) by changing a digit.

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, 379614 + ... + 447613.

Almost surely, 2^28125718000 is an apocalyptic number.

28125718000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28125718000 is an abundant number, since it is smaller than the sum of its proper divisors (43882824944).

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

28125718000 is a wasteful number, since it uses less digits than its factorization.

28125718000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827267 (or 827251 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The spelling of 28125718000 in words is "twenty-eight billion, one hundred twenty-five million, seven hundred eighteen thousand".