13361620 has 48 divisors (see below), whose sum is σ = 30256128. Its totient is φ = 4942080.

The previous prime is 13361611. The next prime is 13361627. The reversal of 13361620 is 2616331.

It is a junction number, because it is equal to n+sod(n) for n = 13361591 and 13361600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13361627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13792 + ... + 14728.

It is an arithmetic number, because the mean of its divisors is an integer number (630336).

Almost surely, 2^13361620 is an apocalyptic number.

13361620 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 13361620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15128064).

13361620 is an abundant number, since it is smaller than the sum of its proper divisors (16894508).

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

13361620 is a wasteful number, since it uses less digits than its factorization.

13361620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13361620 is about 3655.3549759223. The cubic root of 13361620 is about 237.2937896145.

Adding to 13361620 its reverse (2616331), we get a palindrome (15977951).

The spelling of 13361620 in words is "thirteen million, three hundred sixty-one thousand, six hundred twenty".