28242390528 has 200 divisors, whose sum is σ = 91960866360. Its totient is φ = 8558161920.

The previous prime is 28242390521. The next prime is 28242390541. The reversal of 28242390528 is 82509324282.

28242390528 is a `hidden beast` number, since 2 + 82 + 42 + 3 + 9 + 0 + 528 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28242390521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 425238 + ... + 487146.

Almost surely, 2^28242390528 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 28242390528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45980433180).

28242390528 is an abundant number, since it is smaller than the sum of its proper divisors (63718475832).

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

28242390528 is an equidigital number, since it uses as much as digits as its factorization.

28242390528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61950 (or 61925 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 28242390528 in words is "twenty-eight billion, two hundred forty-two million, three hundred ninety thousand, five hundred twenty-eight".