22494430420 has 96 divisors (see below), whose sum is σ = 59012271360. Its totient is φ = 6997232640.

The previous prime is 22494430403. The next prime is 22494430421. The reversal of 22494430420 is 2403449422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22494430421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769512 + ... + 798208.

It is an arithmetic number, because the mean of its divisors is an integer number (614711160).

Almost surely, 2^22494430420 is an apocalyptic number.

22494430420 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 22494430420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29506135680).

22494430420 is an abundant number, since it is smaller than the sum of its proper divisors (36517840940).

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

22494430420 is a wasteful number, since it uses less digits than its factorization.

22494430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29233 (or 29231 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 22494430420 its reverse (2403449422), we get a palindrome (24897879842).

The spelling of 22494430420 in words is "twenty-two billion, four hundred ninety-four million, four hundred thirty thousand, four hundred twenty".