13109712 has 80 divisors (see below), whose sum is σ = 42235392. Its totient is φ = 3404160.

The previous prime is 13109687. The next prime is 13109713. The reversal of 13109712 is 21790131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13109713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1923 + ... + 5469.

Almost surely, 2^13109712 is an apocalyptic number.

13109712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13109712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21117696).

13109712 is an abundant number, since it is smaller than the sum of its proper divisors (29125680).

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

13109712 is a wasteful number, since it uses less digits than its factorization.

13109712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 13109712 is about 3620.7336273192. The cubic root of 13109712 is about 235.7930772671.

Adding to 13109712 its reverse (21790131), we get a palindrome (34899843).

The spelling of 13109712 in words is "thirteen million, one hundred nine thousand, seven hundred twelve".