28580797296 has 160 divisors (see below), whose sum is σ = 83046113280. Its totient is φ = 9410494464.

The previous prime is 28580797261. The next prime is 28580797309. The reversal of 28580797296 is 69279708582.

28580797296 is a `hidden beast` number, since 28 + 580 + 7 + 9 + 7 + 29 + 6 = 666.

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, 14099035 + ... + 14101061.

It is an arithmetic number, because the mean of its divisors is an integer number (519038208).

Almost surely, 2^28580797296 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 28580797296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41523056640).

28580797296 is an abundant number, since it is smaller than the sum of its proper divisors (54465315984).

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

28580797296 is a wasteful number, since it uses less digits than its factorization.

28580797296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428 (or 2416 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 28580797296 in words is "twenty-eight billion, five hundred eighty million, seven hundred ninety-seven thousand, two hundred ninety-six".