22681968 has 20 divisors (see below), whose sum is σ = 58595208. Its totient is φ = 7560640.

The previous prime is 22681963. The next prime is 22681969. The reversal of 22681968 is 86918622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681963) by changing a digit.

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, 236223 + ... + 236318.

Almost surely, 2^22681968 is an apocalyptic number.

It is an amenable number.

22681968 is an abundant number, since it is smaller than the sum of its proper divisors (35913240).

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

22681968 is a wasteful number, since it uses less digits than its factorization.

22681968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472552 (or 472546 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 22681968 is about 4762.5589760128. The cubic root of 22681968 is about 283.0698259030.

The spelling of 22681968 in words is "twenty-two million, six hundred eighty-one thousand, nine hundred sixty-eight".