13129860 has 48 divisors (see below), whose sum is σ = 37396800. Its totient is φ = 3441024.

The previous prime is 13129841. The next prime is 13129861. The reversal of 13129860 is 6892131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (13129861) 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, 1686 + ... + 5394.

It is an arithmetic number, because the mean of its divisors is an integer number (779100).

Almost surely, 2^13129860 is an apocalyptic number.

13129860 is a gapful number since it is divisible by the number (10) 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 13129860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18698400).

13129860 is an abundant number, since it is smaller than the sum of its proper divisors (24266940).

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

13129860 is a wasteful number, since it uses less digits than its factorization.

13129860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780 (or 3778 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 13129860 is about 3623.5148681908. The cubic root of 13129860 is about 235.9138103344.

The spelling of 13129860 in words is "thirteen million, one hundred twenty-nine thousand, eight hundred sixty".