22443420 has 48 divisors (see below), whose sum is σ = 64310400. Its totient is φ = 5845056.

The previous prime is 22443413. The next prime is 22443431. The reversal of 22443420 is 2434422.

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, 1770 + ... + 6929.

It is an arithmetic number, because the mean of its divisors is an integer number (1339800).

Almost surely, 2^22443420 is an apocalyptic number.

22443420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22443420 is an abundant number, since it is smaller than the sum of its proper divisors (41866980).

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

22443420 is a wasteful number, since it uses less digits than its factorization.

22443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8754 (or 8752 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 22443420 is about 4737.4486804608. The cubic root of 22443420 is about 282.0739708371.

Adding to 22443420 its reverse (2434422), we get a palindrome (24877842).

The spelling of 22443420 in words is "twenty-two million, four hundred forty-three thousand, four hundred twenty".