23136856 has 8 divisors (see below), whose sum is σ = 43381620. Its totient is φ = 11568424.

The previous prime is 23136853. The next prime is 23136857. The reversal of 23136856 is 65863132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1446046 + ... + 1446061.

Almost surely, 2^23136856 is an apocalyptic number.

It is an amenable number.

23136856 is a deficient number, since it is larger than the sum of its proper divisors (20244764).

23136856 is a wasteful number, since it uses less digits than its factorization.

23136856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892113 (or 2892109 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 23136856 is about 4810.0785856366. The cubic root of 23136856 is about 284.9496412510.

Adding to 23136856 its reverse (65863132), we get a palindrome (88999988).

The spelling of 23136856 in words is "twenty-three million, one hundred thirty-six thousand, eight hundred fifty-six".