23145922 has 4 divisors (see below), whose sum is σ = 34718886. Its totient is φ = 11572960.

The previous prime is 23145907. The next prime is 23145923. The reversal of 23145922 is 22954132.

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

It can be written as a sum of positive squares in only one way, i.e., 15752961 + 7392961 = 3969^2 + 2719^2 .

It is not an unprimeable number, because it can be changed into a prime (23145923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5786479 + ... + 5786482.

Almost surely, 2^23145922 is an apocalyptic number.

23145922 is a deficient number, since it is larger than the sum of its proper divisors (11572964).

23145922 is a wasteful number, since it uses less digits than its factorization.

23145922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11572963.

The product of its digits is 4320, while the sum is 28.

The square root of 23145922 is about 4811.0208895826. The cubic root of 23145922 is about 284.9868548364.

The spelling of 23145922 in words is "twenty-three million, one hundred forty-five thousand, nine hundred twenty-two".