13129746 has 96 divisors (see below), whose sum is σ = 33685632. Its totient is φ = 3386880.

The previous prime is 13129693. The next prime is 13129747. The reversal of 13129746 is 64792131.

Its product of digits (9072) is a multiple of the sum of its prime factors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184891 + ... + 184961.

It is an arithmetic number, because the mean of its divisors is an integer number (350892).

Almost surely, 2^13129746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13129746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16842816).

13129746 is an abundant number, since it is smaller than the sum of its proper divisors (20555886).

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

13129746 is a wasteful number, since it uses less digits than its factorization.

13129746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 137 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 13129746 is about 3623.4991375741. The cubic root of 13129746 is about 235.9131275586.

The spelling of 13129746 in words is "thirteen million, one hundred twenty-nine thousand, seven hundred forty-six".