28288163328 has 160 divisors (see below), whose sum is σ = 76437250560. Its totient is φ = 9295872000.

The previous prime is 28288163231. The next prime is 28288163329. The reversal of 28288163328 is 82336188282.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28288163329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37666953 + ... + 37667703.

It is an arithmetic number, because the mean of its divisors is an integer number (477732816).

Almost surely, 2^28288163328 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 28288163328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38218625280).

28288163328 is an abundant number, since it is smaller than the sum of its proper divisors (48149087232).

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

28288163328 is a wasteful number, since it uses less digits than its factorization.

28288163328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1072 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 51.

The spelling of 28288163328 in words is "twenty-eight billion, two hundred eighty-eight million, one hundred sixty-three thousand, three hundred twenty-eight".