22604420 has 24 divisors (see below), whose sum is σ = 47909400. Its totient is φ = 8957952.

The previous prime is 22604419. The next prime is 22604431. The reversal of 22604420 is 2440622.

It can be written as a sum of positive squares in 4 ways, for example, as 495616 + 22108804 = 704^2 + 4702^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22604392 and 22604401.

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 7 ways as a sum of consecutive naturals, for example, 3005 + ... + 7364.

It is an arithmetic number, because the mean of its divisors is an integer number (1996225).

Almost surely, 2^22604420 is an apocalyptic number.

22604420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22604420 is an abundant number, since it is smaller than the sum of its proper divisors (25304980).

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

22604420 is a wasteful number, since it uses less digits than its factorization.

22604420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487 (or 10485 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22604420 is about 4754.4105838684. The cubic root of 22604420 is about 282.7468591694.

The spelling of 22604420 in words is "twenty-two million, six hundred four thousand, four hundred twenty".