28263790608 has 80 divisors (see below), whose sum is σ = 75189550656. Its totient is φ = 9143447040.

The previous prime is 28263790591. The next prime is 28263790619. The reversal of 28263790608 is 80609736282.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

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, 280438 + ... + 367658.

Almost surely, 2^28263790608 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 28263790608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37594775328).

28263790608 is an abundant number, since it is smaller than the sum of its proper divisors (46925760048).

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

28263790608 is a wasteful number, since it uses less digits than its factorization.

28263790608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87432 (or 87426 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 28263790608 in words is "twenty-eight billion, two hundred sixty-three million, seven hundred ninety thousand, six hundred eight".