28473350928 has 80 divisors (see below), whose sum is σ = 80596912896. Its totient is φ = 8590241920.

The previous prime is 28473350903. The next prime is 28473350951. The reversal of 28473350928 is 82905337482.

It is a super-2 number, since 2×28473350928² (a number of 22 digits) contains 22 as substring.

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, 1075 + ... + 238637.

Almost surely, 2^28473350928 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 28473350928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40298456448).

28473350928 is an abundant number, since it is smaller than the sum of its proper divisors (52123561968).

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

28473350928 is a wasteful number, since it uses less digits than its factorization.

28473350928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237812 (or 237806 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 28473350928 in words is "twenty-eight billion, four hundred seventy-three million, three hundred fifty thousand, nine hundred twenty-eight".