23120836 has 6 divisors (see below), whose sum is σ = 40461470. Its totient is φ = 11560416.

The previous prime is 23120809. The next prime is 23120837. The reversal of 23120836 is 63802132.

It can be written as a sum of positive squares in only one way, i.e., 14745600 + 8375236 = 3840^2 + 2894^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23120836.

It is not an unprimeable number, because it can be changed into a prime (23120837) 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, 2890101 + ... + 2890108.

Almost surely, 2^23120836 is an apocalyptic number.

It is an amenable number.

23120836 is a deficient number, since it is larger than the sum of its proper divisors (17340634).

23120836 is a wasteful number, since it uses less digits than its factorization.

23120836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5780213 (or 5780211 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 23120836 is about 4808.4130438223. The cubic root of 23120836 is about 284.8838595211.

Adding to 23120836 its reverse (63802132), we get a palindrome (86922968).

The spelling of 23120836 in words is "twenty-three million, one hundred twenty thousand, eight hundred thirty-six".