23189938 has 24 divisors (see below), whose sum is σ = 37698372. Its totient is φ = 10692864.

The previous prime is 23189923. The next prime is 23190017. The reversal of 23189938 is 83998132.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 20948929 + 2241009 = 4577^2 + 1497^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23189894 and 23189903.

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 11 ways as a sum of consecutive naturals, for example, 30256 + ... + 31012.

Almost surely, 2^23189938 is an apocalyptic number.

23189938 is a deficient number, since it is larger than the sum of its proper divisors (14508434).

23189938 is a wasteful number, since it uses less digits than its factorization.

23189938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 829 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 23189938 is about 4815.5932137173. The cubic root of 23189938 is about 285.1673911496.

The spelling of 23189938 in words is "twenty-three million, one hundred eighty-nine thousand, nine hundred thirty-eight".