13061520 has 80 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 3482496.

The previous prime is 13061471. The next prime is 13061527. The reversal of 13061520 is 2516031.

13061520 is a `hidden beast` number, since 1 + 30 + 615 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13061493 and 13061502.

It is not an unprimeable number, because it can be changed into a prime (13061527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864 + ... + 5183.

It is an arithmetic number, because the mean of its divisors is an integer number (562464).

Almost surely, 2^13061520 is an apocalyptic number.

13061520 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 13061520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22498560).

13061520 is an abundant number, since it is smaller than the sum of its proper divisors (31935600).

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

13061520 is a wasteful number, since it uses less digits than its factorization.

13061520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069 (or 6057 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 13061520 is about 3614.0724951224. The cubic root of 13061520 is about 235.5037931962.

Adding to 13061520 its reverse (2516031), we get a palindrome (15577551).

The spelling of 13061520 in words is "thirteen million, sixty-one thousand, five hundred twenty".