28965316864 has 81 divisors (see below), whose sum is σ = 63617241891. Its totient is φ = 13152437760.

The previous prime is 28965316819. The next prime is 28965316867. The reversal of 28965316864 is 46861356982.

The square root of 28965316864 is 170192.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28965316799 and 28965316808.

It is not an unprimeable number, because it can be changed into a prime (28965316867) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29953309 + ... + 29954275.

Almost surely, 2^28965316864 is an apocalyptic number.

28965316864 is the 170192-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28965316864

28965316864 is an abundant number, since it is smaller than the sum of its proper divisors (34651925027).

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

28965316864 is an frugal number, since it uses more digits than its factorization.

28965316864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 980 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 58.

The spelling of 28965316864 in words is "twenty-eight billion, nine hundred sixty-five million, three hundred sixteen thousand, eight hundred sixty-four".