22403648 has 28 divisors (see below), whose sum is σ = 45663612. Its totient is φ = 10897920.

The previous prime is 22403639. The next prime is 22403651. The reversal of 22403648 is 84630422.

It can be written as a sum of positive squares in 2 ways, for example, as 18593344 + 3810304 = 4312^2 + 1952^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22403648.

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, 2363 + ... + 7098.

Almost surely, 2^22403648 is an apocalyptic number.

It is an amenable number.

22403648 is an abundant number, since it is smaller than the sum of its proper divisors (23259964).

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

22403648 is an equidigital number, since it uses as much as digits as its factorization.

22403648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510 (or 9500 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 22403648 is about 4733.2492011302. The cubic root of 22403648 is about 281.9072511578.

The spelling of 22403648 in words is "twenty-two million, four hundred three thousand, six hundred forty-eight".