22354420 has 24 divisors (see below), whose sum is σ = 51212448. Its totient is φ = 8128800.

The previous prime is 22354417. The next prime is 22354433. The reversal of 22354420 is 2445322.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22354391 and 22354400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50586 + ... + 51025.

It is an arithmetic number, because the mean of its divisors is an integer number (2133852).

Almost surely, 2^22354420 is an apocalyptic number.

22354420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22354420 is an abundant number, since it is smaller than the sum of its proper divisors (28858028).

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

22354420 is a wasteful number, since it uses less digits than its factorization.

22354420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101631 (or 101629 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22354420 is about 4728.0461080662. The cubic root of 22354420 is about 281.7006195236.

Adding to 22354420 its reverse (2445322), we get a palindrome (24799742).

The spelling of 22354420 in words is "twenty-two million, three hundred fifty-four thousand, four hundred twenty".