13243620 has 48 divisors (see below), whose sum is σ = 39936960. Its totient is φ = 3259776.

The previous prime is 13243597. The next prime is 13243621. The reversal of 13243620 is 2634231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13243621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7710 + ... + 9269.

It is an arithmetic number, because the mean of its divisors is an integer number (832020).

Almost surely, 2^13243620 is an apocalyptic number.

13243620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13243620 is an abundant number, since it is smaller than the sum of its proper divisors (26693340).

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

13243620 is a wasteful number, since it uses less digits than its factorization.

13243620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17004 (or 17002 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 13243620 is about 3639.1784787229. The cubic root of 13243620 is about 236.5931884130.

Adding to 13243620 its reverse (2634231), we get a palindrome (15877851).

The spelling of 13243620 in words is "thirteen million, two hundred forty-three thousand, six hundred twenty".