22533440420 has 24 divisors (see below), whose sum is σ = 47481739704. Its totient is φ = 8982611456.

The previous prime is 22533440383. The next prime is 22533440429. The reversal of 22533440420 is 2404433522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1739223616 + 20794216804 = 41704^2 + 144202^2 .

It is not an unprimeable number, because it can be changed into a prime (22533440429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916789 + ... + 1928508.

It is an arithmetic number, because the mean of its divisors is an integer number (1978405821).

Almost surely, 2^22533440420 is an apocalyptic number.

22533440420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22533440420 is an abundant number, since it is smaller than the sum of its proper divisors (24948299284).

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

22533440420 is a wasteful number, since it uses less digits than its factorization.

22533440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845599 (or 3845597 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 22533440420 its reverse (2404433522), we get a palindrome (24937873942).

The spelling of 22533440420 in words is "twenty-two billion, five hundred thirty-three million, four hundred forty thousand, four hundred twenty".