13213340 has 72 divisors (see below), whose sum is σ = 32845680. Its totient is φ = 4451328.

The previous prime is 13213331. The next prime is 13213363. The reversal of 13213340 is 4331231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 94991 + ... + 95129.

It is an arithmetic number, because the mean of its divisors is an integer number (456190).

Almost surely, 2^13213340 is an apocalyptic number.

13213340 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 13213340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16422840).

13213340 is an abundant number, since it is smaller than the sum of its proper divisors (19632340).

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

13213340 is a wasteful number, since it uses less digits than its factorization.

13213340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13213340 is about 3635.0158183975. The cubic root of 13213340 is about 236.4127365273.

Adding to 13213340 its reverse (4331231), we get a palindrome (17544571).

The spelling of 13213340 in words is "thirteen million, two hundred thirteen thousand, three hundred forty".