13170520 has 64 divisors (see below), whose sum is σ = 33242400. Its totient is φ = 4654080.

The previous prime is 13170503. The next prime is 13170527. The reversal of 13170520 is 2507131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13170527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15876 + ... + 16684.

Almost surely, 2^13170520 is an apocalyptic number.

13170520 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 13170520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16621200).

13170520 is an abundant number, since it is smaller than the sum of its proper divisors (20071880).

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

13170520 is a wasteful number, since it uses less digits than its factorization.

13170520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 13170520 is about 3629.1211057224. The cubic root of 13170520 is about 236.1570820549.

Adding to 13170520 its reverse (2507131), we get a palindrome (15677651).

The spelling of 13170520 in words is "thirteen million, one hundred seventy thousand, five hundred twenty".