23221668 has 12 divisors (see below), whose sum is σ = 54183920. Its totient is φ = 7740552.

The previous prime is 23221631. The next prime is 23221669. The reversal of 23221668 is 86612232.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (23221669) 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, 967558 + ... + 967581.

Almost surely, 2^23221668 is an apocalyptic number.

It is an amenable number.

23221668 is an abundant number, since it is smaller than the sum of its proper divisors (30962252).

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

23221668 is a wasteful number, since it uses less digits than its factorization.

23221668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935146 (or 1935144 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 23221668 is about 4818.8865933948. The cubic root of 23221668 is about 285.2973934751.

The spelling of 23221668 in words is "twenty-three million, two hundred twenty-one thousand, six hundred sixty-eight".