23136836 has 6 divisors (see below), whose sum is σ = 40489470. Its totient is φ = 11568416.

The previous prime is 23136829. The next prime is 23136853. The reversal of 23136836 is 63863132.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 1976836 = 4600^2 + 1406^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2892101 + ... + 2892108.

It is an arithmetic number, because the mean of its divisors is an integer number (6748245).

Almost surely, 2^23136836 is an apocalyptic number.

It is an amenable number.

23136836 is a deficient number, since it is larger than the sum of its proper divisors (17352634).

23136836 is a wasteful number, since it uses less digits than its factorization.

23136836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784213 (or 5784211 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 23136836 is about 4810.0765066681. The cubic root of 23136836 is about 284.9495591455.

Adding to 23136836 its reverse (63863132), we get a palindrome (86999968).

The spelling of 23136836 in words is "twenty-three million, one hundred thirty-six thousand, eight hundred thirty-six".