28502849124 has 72 divisors (see below), whose sum is σ = 73359118560. Its totient is φ = 9329323392.

The previous prime is 28502849099. The next prime is 28502849147. The reversal of 28502849124 is 42194820582.

28502849124 is a `hidden beast` number, since 285 + 0 + 284 + 91 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28502849124.

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 23 ways as a sum of consecutive naturals, for example, 572667 + ... + 620445.

Almost surely, 2^28502849124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28502849124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36679559280).

28502849124 is an abundant number, since it is smaller than the sum of its proper divisors (44856269436).

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

28502849124 is a wasteful number, since it uses less digits than its factorization.

28502849124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48089 (or 48084 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 28502849124 in words is "twenty-eight billion, five hundred two million, eight hundred forty-nine thousand, one hundred twenty-four".