28280258250 has 64 divisors (see below), whose sum is σ = 70622907264. Its totient is φ = 7537622400.

The previous prime is 28280258221. The next prime is 28280258263. The reversal of 28280258250 is 5285208282.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1691934 + ... + 1708566.

It is an arithmetic number, because the mean of its divisors is an integer number (1103482926).

Almost surely, 2^28280258250 is an apocalyptic number.

28280258250 is an abundant number, since it is smaller than the sum of its proper divisors (42342649014).

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

28280258250 is a wasteful number, since it uses less digits than its factorization.

28280258250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18920 (or 18910 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 42.

The spelling of 28280258250 in words is "twenty-eight billion, two hundred eighty million, two hundred fifty-eight thousand, two hundred fifty".