28540556336896 has 144 divisors (see below), whose sum is σ = 58769998479360. Its totient is φ = 13827115560960.

The previous prime is 28540556336879. The next prime is 28540556336927. The reversal of 28540556336896 is 69863365504582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546487041 + ... + 546539263.

It is an arithmetic number, because the mean of its divisors is an integer number (408124989440).

Almost surely, 2^{28540556336896} 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 28540556336896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29384999239680).

28540556336896 is an abundant number, since it is smaller than the sum of its proper divisors (30229442142464).

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

28540556336896 is an equidigital number, since it uses as much as digits as its factorization.

28540556336896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52822 (or 52808 counting only the distinct ones).

The product of its (nonzero) digits is 1119744000, while the sum is 70.

The spelling of 28540556336896 in words is "twenty-eight trillion, five hundred forty billion, five hundred fifty-six million, three hundred thirty-six thousand, eight hundred ninety-six".