28408090524 has 96 divisors (see below), whose sum is σ = 75390061824. Its totient is φ = 8249579520.

The previous prime is 28408090519. The next prime is 28408090531. The reversal of 28408090524 is 42509080482.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 253612 + ... + 348044.

It is an arithmetic number, because the mean of its divisors is an integer number (785313144).

Almost surely, 2^28408090524 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 28408090524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37695030912).

28408090524 is an abundant number, since it is smaller than the sum of its proper divisors (46981971300).

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

28408090524 is a wasteful number, since it uses less digits than its factorization.

28408090524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94547 (or 94545 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 28408090524 in words is "twenty-eight billion, four hundred eight million, ninety thousand, five hundred twenty-four".