28552731936 has 96 divisors (see below), whose sum is σ = 76965831936. Its totient is φ = 9262848000.

The previous prime is 28552731919. The next prime is 28552731937. The reversal of 28552731936 is 63913725582.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (28552731937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1648441 + ... + 1665671.

It is an arithmetic number, because the mean of its divisors is an integer number (801727416).

Almost surely, 2^28552731936 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 28552731936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38482915968).

28552731936 is an abundant number, since it is smaller than the sum of its proper divisors (48413100000).

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

28552731936 is a wasteful number, since it uses less digits than its factorization.

28552731936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17706 (or 17698 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The spelling of 28552731936 in words is "twenty-eight billion, five hundred fifty-two million, seven hundred thirty-one thousand, nine hundred thirty-six".