23221672 has 16 divisors (see below), whose sum is σ = 43594740. Its totient is φ = 11596416.

The previous prime is 23221669. The next prime is 23221691. The reversal of 23221672 is 27612232.

It can be written as a sum of positive squares in 2 ways, for example, as 15570916 + 7650756 = 3946^2 + 2766^2 .

It is an unprimeable number.

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, 8508 + ... + 10900.

Almost surely, 2^23221672 is an apocalyptic number.

It is an amenable number.

23221672 is a deficient number, since it is larger than the sum of its proper divisors (20373068).

23221672 is a wasteful number, since it uses less digits than its factorization.

23221672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 3608 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 23221672 is about 4818.8870084284. The cubic root of 23221672 is about 285.2974098562.

It can be divided in two parts, 232 and 21672, that added together give a square (21904 = 148²).

The spelling of 23221672 in words is "twenty-three million, two hundred twenty-one thousand, six hundred seventy-two".