13106840 has 32 divisors (see below), whose sum is σ = 30510000. Its totient is φ = 5061504.

The previous prime is 13106837. The next prime is 13106857. The reversal of 13106840 is 4860131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4490 + ... + 6809.

Almost surely, 2^13106840 is an apocalyptic number.

13106840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13106840 is an abundant number, since it is smaller than the sum of its proper divisors (17403160).

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

13106840 is a wasteful number, since it uses less digits than its factorization.

13106840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11339 (or 11335 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13106840 is about 3620.3370008882. The cubic root of 13106840 is about 235.7758572810.

Adding to 13106840 its reverse (4860131), we get a palindrome (17966971).

The spelling of 13106840 in words is "thirteen million, one hundred six thousand, eight hundred forty".