23190836 has 12 divisors (see below), whose sum is σ = 41983620. Its totient is φ = 11195520.

The previous prime is 23190833. The next prime is 23190841. The reversal of 23190836 is 63809132.

It can be written as a sum of positive squares in 2 ways, for example, as 4752400 + 18438436 = 2180^2 + 4294^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23190833) 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, 99845 + ... + 100076.

It is an arithmetic number, because the mean of its divisors is an integer number (3498635).

Almost surely, 2^23190836 is an apocalyptic number.

It is an amenable number.

23190836 is a deficient number, since it is larger than the sum of its proper divisors (18792784).

23190836 is a wasteful number, since it uses less digits than its factorization.

23190836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199954 (or 199952 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 23190836 is about 4815.6864515871. The cubic root of 23190836 is about 285.1710720134.

Adding to 23190836 its reverse (63809132), we get a palindrome (86999968).

The spelling of 23190836 in words is "twenty-three million, one hundred ninety thousand, eight hundred thirty-six".