22340420 has 12 divisors (see below), whose sum is σ = 46914924. Its totient is φ = 8936160.

The previous prime is 22340419. The next prime is 22340441. The reversal of 22340420 is 2404322.

It can be written as a sum of positive squares in 2 ways, for example, as 13778944 + 8561476 = 3712^2 + 2926^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558491 + ... + 558530.

It is an arithmetic number, because the mean of its divisors is an integer number (3909577).

Almost surely, 2^22340420 is an apocalyptic number.

22340420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22340420 is an abundant number, since it is smaller than the sum of its proper divisors (24574504).

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

22340420 is a wasteful number, since it uses less digits than its factorization.

22340420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117030 (or 1117028 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22340420 is about 4726.5653491727. The cubic root of 22340420 is about 281.6417999514.

Adding to 22340420 its reverse (2404322), we get a palindrome (24744742).

The spelling of 22340420 in words is "twenty-two million, three hundred forty thousand, four hundred twenty".