13115020 has 36 divisors (see below), whose sum is σ = 28365120. Its totient is φ = 5093568.

The previous prime is 13115017. The next prime is 13115023. The reversal of 13115020 is 2051131.

It is an interprime number because it is at equal distance from previous prime (13115017) and next prime (13115023).

It is not an unprimeable number, because it can be changed into a prime (13115023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27141 + ... + 27619.

It is an arithmetic number, because the mean of its divisors is an integer number (787920).

Almost surely, 2^13115020 is an apocalyptic number.

13115020 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 13115020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14182560).

13115020 is an abundant number, since it is smaller than the sum of its proper divisors (15250100).

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

13115020 is a wasteful number, since it uses less digits than its factorization.

13115020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 13115020 is about 3621.4665537597. The cubic root of 13115020 is about 235.8248964450.

Adding to 13115020 its reverse (2051131), we get a palindrome (15166151).

It can be divided in two parts, 131 and 15020, that added together give a palindrome (15151).

The spelling of 13115020 in words is "thirteen million, one hundred fifteen thousand, twenty".