23139834 has 16 divisors (see below), whose sum is σ = 48715680. Its totient is φ = 7307280.

The previous prime is 23139833. The next prime is 23139847. The reversal of 23139834 is 43893132.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23139795 and 23139804.

It is not an unprimeable number, because it can be changed into a prime (23139833) 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 7 ways as a sum of consecutive naturals, for example, 101377 + ... + 101604.

It is an arithmetic number, because the mean of its divisors is an integer number (3044730).

Almost surely, 2^23139834 is an apocalyptic number.

23139834 is an abundant number, since it is smaller than the sum of its proper divisors (25575846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23139834 is a wasteful number, since it uses less digits than its factorization.

23139834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203005.

The product of its digits is 15552, while the sum is 33.

The square root of 23139834 is about 4810.3881340283. The cubic root of 23139834 is about 284.9618662429.

The spelling of 23139834 in words is "twenty-three million, one hundred thirty-nine thousand, eight hundred thirty-four".