13106538 has 24 divisors (see below), whose sum is σ = 28548000. Its totient is φ = 4345704.

The previous prime is 13106519. The next prime is 13106539. The reversal of 13106538 is 83560131.

13106538 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 653 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (13106539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1753 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (1189500).

Almost surely, 2^13106538 is an apocalyptic number.

13106538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13106538 is an abundant number, since it is smaller than the sum of its proper divisors (15441462).

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

13106538 is a wasteful number, since it uses less digits than its factorization.

13106538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866 (or 3863 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13106538 is about 3620.2952918236. The cubic root of 13106538 is about 235.7740463982.

Adding to 13106538 its reverse (83560131), we get a palindrome (96666669).

The spelling of 13106538 in words is "thirteen million, one hundred six thousand, five hundred thirty-eight".