22972636 has 12 divisors (see below), whose sum is σ = 40294800. Its totient is φ = 11459840.

The previous prime is 22972601. The next prime is 22972639. The reversal of 22972636 is 63627922.

It is a junction number, because it is equal to n+sod(n) for n = 22972595 and 22972604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22972639) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4600 + ... + 8191.

It is an arithmetic number, because the mean of its divisors is an integer number (3357900).

Almost surely, 2^22972636 is an apocalyptic number.

It is an amenable number.

22972636 is a deficient number, since it is larger than the sum of its proper divisors (17322164).

22972636 is a wasteful number, since it uses less digits than its factorization.

22972636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13244 (or 13242 counting only the distinct ones).

The product of its digits is 54432, while the sum is 37.

The square root of 22972636 is about 4792.9777800445. The cubic root of 22972636 is about 284.2738712343.

The spelling of 22972636 in words is "twenty-two million, nine hundred seventy-two thousand, six hundred thirty-six".