22728781824 has 208 divisors, whose sum is σ = 69795183360. Its totient is φ = 6443827200.

The previous prime is 22728781793. The next prime is 22728781847. The reversal of 22728781824 is 42818782722.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11955274 + ... + 11957174.

Almost surely, 2^22728781824 is an apocalyptic number.

22728781824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22728781824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34897591680).

22728781824 is an abundant number, since it is smaller than the sum of its proper divisors (47066401536).

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

22728781824 is a wasteful number, since it uses less digits than its factorization.

22728781824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074 (or 2052 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 51.

The spelling of 22728781824 in words is "twenty-two billion, seven hundred twenty-eight million, seven hundred eighty-one thousand, eight hundred twenty-four".