28051501783424 has 256 divisors, whose sum is σ = 66867672268800. Its totient is φ = 11468817285120.

The previous prime is 28051501783381. The next prime is 28051501783447. The reversal of 28051501783424 is 42438710515082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1432870724 + ... + 1432890300.

It is an arithmetic number, because the mean of its divisors is an integer number (261201844800).

Almost surely, 2^{28051501783424} 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 28051501783424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33433836134400).

28051501783424 is an abundant number, since it is smaller than the sum of its proper divisors (38816170485376).

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

28051501783424 is a wasteful number, since it uses less digits than its factorization.

28051501783424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20361 (or 20349 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 28051501783424 in words is "twenty-eight trillion, fifty-one billion, five hundred one million, seven hundred eighty-three thousand, four hundred twenty-four".