28975227316 has 96 divisors (see below), whose sum is σ = 64062351360. Its totient is φ = 11180467584.

The previous prime is 28975227313. The next prime is 28975227317. The reversal of 28975227316 is 61372257982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28975227313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1913511 + ... + 1928593.

It is an arithmetic number, because the mean of its divisors is an integer number (667316160).

Almost surely, 2^28975227316 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 28975227316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32031175680).

28975227316 is an abundant number, since it is smaller than the sum of its proper divisors (35087124044).

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

28975227316 is a wasteful number, since it uses less digits than its factorization.

28975227316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15293 (or 15291 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The spelling of 28975227316 in words is "twenty-eight billion, nine hundred seventy-five million, two hundred twenty-seven thousand, three hundred sixteen".