22972646 has 4 divisors (see below), whose sum is σ = 34458972. Its totient is φ = 11486322.

The previous prime is 22972639. The next prime is 22972667. The reversal of 22972646 is 64627922.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

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 as a sum of consecutive naturals, namely, 5743160 + ... + 5743163.

It is an arithmetic number, because the mean of its divisors is an integer number (8614743).

Almost surely, 2^22972646 is an apocalyptic number.

22972646 is a deficient number, since it is larger than the sum of its proper divisors (11486326).

22972646 is a wasteful number, since it uses less digits than its factorization.

22972646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486325.

The product of its digits is 72576, while the sum is 38.

The square root of 22972646 is about 4792.9788232372. The cubic root of 22972646 is about 284.2739124824.

The spelling of 22972646 in words is "twenty-two million, nine hundred seventy-two thousand, six hundred forty-six".