22420444440 has 32 divisors (see below), whose sum is σ = 67261333680. Its totient is φ = 5978785152.

The previous prime is 22420444421. The next prime is 22420444481. The reversal of 22420444440 is 4444402422.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22420444398 and 22420444407.

It is a congruent number.

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, 93418399 + ... + 93418638.

Almost surely, 2^22420444440 is an apocalyptic number.

22420444440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22420444440 is an abundant number, since it is smaller than the sum of its proper divisors (44840889240).

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

22420444440 is a wasteful number, since it uses less digits than its factorization.

22420444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186837051 (or 186837047 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 22420444440 its reverse (4444402422), we get a palindrome (26864846862).

The spelling of 22420444440 in words is "twenty-two billion, four hundred twenty million, four hundred forty-four thousand, four hundred forty".