23221472 has 12 divisors (see below), whose sum is σ = 45717336. Its totient is φ = 11610720.

The previous prime is 23221447. The next prime is 23221481. The reversal of 23221472 is 27412232.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362804 + ... + 362867.

It is an arithmetic number, because the mean of its divisors is an integer number (3809778).

Almost surely, 2^23221472 is an apocalyptic number.

It is an amenable number.

23221472 is a deficient number, since it is larger than the sum of its proper divisors (22495864).

23221472 is an equidigital number, since it uses as much as digits as its factorization.

23221472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725681 (or 725673 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 23221472 is about 4818.8662567040. The cubic root of 23221472 is about 285.2965907988.

The spelling of 23221472 in words is "twenty-three million, two hundred twenty-one thousand, four hundred seventy-two".