13123838 has 16 divisors (see below), whose sum is σ = 24228960. Its totient is φ = 5191776.

The previous prime is 13123811. The next prime is 13123841. The reversal of 13123838 is 83832131.

It is a self number, because there is not a number n which added to its sum of digits gives 13123838.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 35873 + ... + 36236.

It is an arithmetic number, because the mean of its divisors is an integer number (1514310).

Almost surely, 2^13123838 is an apocalyptic number.

13123838 is a deficient number, since it is larger than the sum of its proper divisors (11105122).

13123838 is a wasteful number, since it uses less digits than its factorization.

13123838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72131.

The product of its digits is 3456, while the sum is 29.

The square root of 13123838 is about 3622.6838117617. The cubic root of 13123838 is about 235.8777375908.

Adding to 13123838 its reverse (83832131), we get a palindrome (96955969).

The spelling of 13123838 in words is "thirteen million, one hundred twenty-three thousand, eight hundred thirty-eight".