22605040 has 20 divisors (see below), whose sum is σ = 52556904. Its totient is φ = 9041984.

The previous prime is 22604999. The next prime is 22605059. The reversal of 22605040 is 4050622.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 22604999 and 22605017.

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 3 ways as a sum of consecutive naturals, for example, 141202 + ... + 141361.

Almost surely, 2^22605040 is an apocalyptic number.

22605040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22605040 is an abundant number, since it is smaller than the sum of its proper divisors (29951864).

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

22605040 is a wasteful number, since it uses less digits than its factorization.

22605040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282576 (or 282570 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22605040 is about 4754.4757860357. The cubic root of 22605040 is about 282.7494442310.

Adding to 22605040 its reverse (4050622), we get a palindrome (26655662).

The spelling of 22605040 in words is "twenty-two million, six hundred five thousand, forty".