13508620 has 36 divisors (see below), whose sum is σ = 29955744. Its totient is φ = 5116320.

The previous prime is 13508617. The next prime is 13508623. The reversal of 13508620 is 2680531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13508617) and next prime (13508623).

It is not an unprimeable number, because it can be changed into a prime (13508623) 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, 6285 + ... + 8155.

It is an arithmetic number, because the mean of its divisors is an integer number (832104).

Almost surely, 2^13508620 is an apocalyptic number.

13508620 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 13508620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14977872).

13508620 is an abundant number, since it is smaller than the sum of its proper divisors (16447124).

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

13508620 is a wasteful number, since it uses less digits than its factorization.

13508620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 13508620 is about 3675.4074604049. The cubic root of 13508620 is about 238.1608262609.

The spelling of 13508620 in words is "thirteen million, five hundred eight thousand, six hundred twenty".