23136839 has 8 divisors (see below), whose sum is σ = 25586832. Its totient is φ = 20744640.

The previous prime is 23136829. The next prime is 23136853. The reversal of 23136839 is 93863132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23136839 - 2⁴ = 23136823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23136799 and 23136808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13604 + ... + 15209.

It is an arithmetic number, because the mean of its divisors is an integer number (3198354).

Almost surely, 2^23136839 is an apocalyptic number.

23136839 is a deficient number, since it is larger than the sum of its proper divisors (2449993).

23136839 is a wasteful number, since it uses less digits than its factorization.

23136839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28897.

The product of its digits is 23328, while the sum is 35.

The square root of 23136839 is about 4810.0768185134. The cubic root of 23136839 is about 284.9495714613.

The spelling of 23136839 in words is "twenty-three million, one hundred thirty-six thousand, eight hundred thirty-nine".