28223733824 has 112 divisors (see below), whose sum is σ = 66000270336. Its totient is φ = 11805696000.

The previous prime is 28223733793. The next prime is 28223733827. The reversal of 28223733824 is 42833732282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (28223733827) 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, 3079649 + ... + 3088799.

It is an arithmetic number, because the mean of its divisors is an integer number (589288128).

Almost surely, 2^28223733824 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 28223733824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33000135168).

28223733824 is an abundant number, since it is smaller than the sum of its proper divisors (37776536512).

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

28223733824 is a wasteful number, since it uses less digits than its factorization.

28223733824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524 (or 9514 counting only the distinct ones).

The product of its digits is 774144, while the sum is 44.

The spelling of 28223733824 in words is "twenty-eight billion, two hundred twenty-three million, seven hundred thirty-three thousand, eight hundred twenty-four".