20424224020 has 48 divisors (see below), whose sum is σ = 44808422400. Its totient is φ = 7805278976.

The previous prime is 20424223903. The next prime is 20424224033. The reversal of 20424224020 is 2042242402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20424223982 and 20424224000.

It is a congruent number.

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, 371256 + ... + 422704.

It is an arithmetic number, because the mean of its divisors is an integer number (933508800).

Almost surely, 2^20424224020 is an apocalyptic number.

20424224020 is a gapful number since it is divisible by the number (20) 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 20424224020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22404211200).

20424224020 is an abundant number, since it is smaller than the sum of its proper divisors (24384198380).

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

20424224020 is a wasteful number, since it uses less digits than its factorization.

20424224020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52344 (or 52342 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20424224020 its reverse (2042242402), we get a palindrome (22466466422).

The spelling of 20424224020 in words is "twenty billion, four hundred twenty-four million, two hundred twenty-four thousand, twenty".