20530040224 has 48 divisors (see below), whose sum is σ = 41608256256. Its totient is φ = 9964166400.

The previous prime is 20530040213. The next prime is 20530040231. The reversal of 20530040224 is 42204003502.

It is a junction number, because it is equal to n+sod(n) for n = 20530040195 and 20530040204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490189 + ... + 530419.

It is an arithmetic number, because the mean of its divisors is an integer number (866838672).

Almost surely, 2^20530040224 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 20530040224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20804128128).

20530040224 is an abundant number, since it is smaller than the sum of its proper divisors (21078216032).

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

20530040224 is a wasteful number, since it uses less digits than its factorization.

20530040224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40709 (or 40701 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 20530040224 its reverse (42204003502), we get a palindrome (62734043726).

The spelling of 20530040224 in words is "twenty billion, five hundred thirty million, forty thousand, two hundred twenty-four".