13015660 has 48 divisors (see below), whose sum is σ = 32256000. Its totient is φ = 4317120.

The previous prime is 13015643. The next prime is 13015669. The reversal of 13015660 is 6651031.

13015660 = T₁₅₄ + T₁₅₅ + ... + T₄₃₃.

13015660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13015669) 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, 2841 + ... + 5839.

It is an arithmetic number, because the mean of its divisors is an integer number (672000).

Almost surely, 2^13015660 is an apocalyptic number.

13015660 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 13015660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16128000).

13015660 is an abundant number, since it is smaller than the sum of its proper divisors (19240340).

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

13015660 is a wasteful number, since it uses less digits than its factorization.

13015660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 13015660 is about 3607.7222731247. The cubic root of 13015660 is about 235.2278460174.

Adding to 13015660 its reverse (6651031), we get a palindrome (19666691).

The spelling of 13015660 in words is "thirteen million, fifteen thousand, six hundred sixty".