22040656 has 20 divisors (see below), whose sum is σ = 46586304. Its totient is φ = 10018400.

The previous prime is 22040621. The next prime is 22040663. The reversal of 22040656 is 65604022.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 22040656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62440 + ... + 62791.

Almost surely, 2^22040656 is an apocalyptic number.

It is an amenable number.

22040656 is an abundant number, since it is smaller than the sum of its proper divisors (24545648).

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

22040656 is a wasteful number, since it uses less digits than its factorization.

22040656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125250 (or 125244 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 22040656 is about 4694.7477035513. The cubic root of 22040656 is about 280.3764324723.

Adding to 22040656 its reverse (65604022), we get a palindrome (87644678).

The spelling of 22040656 in words is "twenty-two million, forty thousand, six hundred fifty-six".