20028884424 has 64 divisors (see below), whose sum is σ = 53068659840. Its totient is φ = 6277524480.

The previous prime is 20028884401. The next prime is 20028884429. The reversal of 20028884424 is 42448882002.

It is a super-2 number, since 2×20028884424² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20028884429) 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, 410614 + ... + 456794.

It is an arithmetic number, because the mean of its divisors is an integer number (829197810).

Almost surely, 2^20028884424 is an apocalyptic number.

20028884424 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 20028884424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26534329920).

20028884424 is an abundant number, since it is smaller than the sum of its proper divisors (33039775416).

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

20028884424 is a wasteful number, since it uses less digits than its factorization.

20028884424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47270 (or 47266 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 42.

The spelling of 20028884424 in words is "twenty billion, twenty-eight million, eight hundred eighty-four thousand, four hundred twenty-four".