22011968 has 28 divisors (see below), whose sum is σ = 47652432. Its totient is φ = 10005120.

The previous prime is 22011967. The next prime is 22012019. The reversal of 22011968 is 86911022.

It is a self number, because there is not a number n which added to its sum of digits gives 22011968.

It is not an unprimeable number, because it can be changed into a prime (22011967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14930 + ... + 16337.

Almost surely, 2^22011968 is an apocalyptic number.

It is an amenable number.

22011968 is an abundant number, since it is smaller than the sum of its proper divisors (25640464).

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

22011968 is a wasteful number, since it uses less digits than its factorization.

22011968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31290 (or 31280 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 22011968 is about 4691.6913794494. The cubic root of 22011968 is about 280.2547341679.

The spelling of 22011968 in words is "twenty-two million, eleven thousand, nine hundred sixty-eight".