23222772 has 18 divisors (see below), whose sum is σ = 58702098. Its totient is φ = 7740912.

The previous prime is 23222767. The next prime is 23222783. The reversal of 23222772 is 27722232.

It can be written as a sum of positive squares in only one way, i.e., 22695696 + 527076 = 4764^2 + 726^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322503 + ... + 322574.

Almost surely, 2^23222772 is an apocalyptic number.

It is an amenable number.

23222772 is an abundant number, since it is smaller than the sum of its proper divisors (35479326).

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

23222772 is a wasteful number, since it uses less digits than its factorization.

23222772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645087 (or 645082 counting only the distinct ones).

The product of its digits is 4704, while the sum is 27.

The square root of 23222772 is about 4819.0011413155. The cubic root of 23222772 is about 285.3019145877.

The spelling of 23222772 in words is "twenty-three million, two hundred twenty-two thousand, seven hundred seventy-two".