23221064 has 16 divisors (see below), whose sum is σ = 43669500. Its totient is φ = 11575872.

The previous prime is 23221063. The next prime is 23221067. The reversal of 23221064 is 46012232.

It can be written as a sum of positive squares in 2 ways, for example, as 18852964 + 4368100 = 4342^2 + 2090^2 .

It is not an unprimeable number, because it can be changed into a prime (23221063) 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, 1367 + ... + 6950.

Almost surely, 2^23221064 is an apocalyptic number.

It is an amenable number.

23221064 is a deficient number, since it is larger than the sum of its proper divisors (20448436).

23221064 is a wasteful number, since it uses less digits than its factorization.

23221064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672 (or 8668 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 23221064 is about 4818.8239229090. The cubic root of 23221064 is about 285.2949199071.

Adding to 23221064 its reverse (46012232), we get a palindrome (69233296).

The spelling of 23221064 in words is "twenty-three million, two hundred twenty-one thousand, sixty-four".