28975488912 has 160 divisors (see below), whose sum is σ = 84256194560. Its totient is φ = 9533220480.

The previous prime is 28975488887. The next prime is 28975488917. The reversal of 28975488912 is 21988457982.

28975488912 is a `hidden beast` number, since 2 + 8 + 9 + 7 + 548 + 89 + 1 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28975488912.

It is not an unprimeable number, because it can be changed into a prime (28975488917) 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, 11575053 + ... + 11577555.

It is an arithmetic number, because the mean of its divisors is an integer number (526601216).

Almost surely, 2^28975488912 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 28975488912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42128097280).

28975488912 is an abundant number, since it is smaller than the sum of its proper divisors (55280705648).

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

28975488912 is a wasteful number, since it uses less digits than its factorization.

28975488912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858 (or 2846 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The spelling of 28975488912 in words is "twenty-eight billion, nine hundred seventy-five million, four hundred eighty-eight thousand, nine hundred twelve".