13240620 has 72 divisors (see below), whose sum is σ = 42535584. Its totient is φ = 3322368.

The previous prime is 13240613. The next prime is 13240621. The reversal of 13240620 is 2604231.

It is a happy number.

13240620 is a `hidden beast` number, since 1 + 3 + 2 + 40 + 620 = 666.

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 = 13240593 and 13240602.

It is not an unprimeable number, because it can be changed into a prime (13240621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 897 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (590772).

Almost surely, 2^13240620 is an apocalyptic number.

13240620 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 13240620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21267792).

13240620 is an abundant number, since it is smaller than the sum of its proper divisors (29294964).

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

13240620 is a wasteful number, since it uses less digits than its factorization.

13240620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359 (or 4354 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13240620 is about 3638.7662744397. The cubic root of 13240620 is about 236.5753223722.

Adding to 13240620 its reverse (2604231), we get a palindrome (15844851).

The spelling of 13240620 in words is "thirteen million, two hundred forty thousand, six hundred twenty".