23156222 has 4 divisors (see below), whose sum is σ = 34734336. Its totient is φ = 11578110.

The previous prime is 23156219. The next prime is 23156249. The reversal of 23156222 is 22265132.

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

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, 5789054 + ... + 5789057.

It is an arithmetic number, because the mean of its divisors is an integer number (8683584).

Almost surely, 2^23156222 is an apocalyptic number.

23156222 is a deficient number, since it is larger than the sum of its proper divisors (11578114).

23156222 is a wasteful number, since it uses less digits than its factorization.

23156222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11578113.

The product of its digits is 1440, while the sum is 23.

The square root of 23156222 is about 4812.0912293929. The cubic root of 23156222 is about 285.0291218831.

The spelling of 23156222 in words is "twenty-three million, one hundred fifty-six thousand, two hundred twenty-two".