28250521002 has 96 divisors (see below), whose sum is σ = 67845009024. Its totient is φ = 8423923200.

The previous prime is 28250520959. The next prime is 28250521031. The reversal of 28250521002 is 20012505282.

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, 8672158 + ... + 8675414.

It is an arithmetic number, because the mean of its divisors is an integer number (706718844).

Almost surely, 2^28250521002 is an apocalyptic number.

28250521002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28250521002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33922504512).

28250521002 is an abundant number, since it is smaller than the sum of its proper divisors (39594488022).

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

28250521002 is a wasteful number, since it uses less digits than its factorization.

28250521002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964 (or 3961 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 28250521002 in words is "twenty-eight billion, two hundred fifty million, five hundred twenty-one thousand, two".