22437420 has 96 divisors (see below), whose sum is σ = 66769920. Its totient is φ = 5617920.

The previous prime is 22437419. The next prime is 22437421. The reversal of 22437420 is 2473422.

It is an interprime number because it is at equal distance from previous prime (22437419) and next prime (22437421).

It is not an unprimeable number, because it can be changed into a prime (22437421) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 97866 + ... + 98094.

It is an arithmetic number, because the mean of its divisors is an integer number (695520).

Almost surely, 2^22437420 is an apocalyptic number.

22437420 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 22437420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33384960).

22437420 is an abundant number, since it is smaller than the sum of its proper divisors (44332500).

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

22437420 is a wasteful number, since it uses less digits than its factorization.

22437420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 22437420 is about 4736.8153858896. The cubic root of 22437420 is about 282.0488321451.

The spelling of 22437420 in words is "twenty-two million, four hundred thirty-seven thousand, four hundred twenty".