28313885250 has 384 divisors, whose sum is σ = 90265923072. Its totient is φ = 6270451200.

The previous prime is 28313885227. The next prime is 28313885261. The reversal of 28313885250 is 5258831382.

28313885250 is a `hidden beast` number, since 2 + 8 + 313 + 8 + 85 + 250 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 28313885196 and 28313885205.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 89318092 + ... + 89318408.

It is an arithmetic number, because the mean of its divisors is an integer number (235067508).

Almost surely, 2^28313885250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28313885250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45132961536).

28313885250 is an abundant number, since it is smaller than the sum of its proper divisors (61952037822).

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

28313885250 is a wasteful number, since it uses less digits than its factorization.

28313885250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 28313885250 in words is "twenty-eight billion, three hundred thirteen million, eight hundred eighty-five thousand, two hundred fifty".