13323240 has 192 divisors, whose sum is σ = 52565760. Its totient is φ = 2856960.

The previous prime is 13323227. The next prime is 13323251. The reversal of 13323240 is 4232331.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 42685 + ... + 42995.

It is an arithmetic number, because the mean of its divisors is an integer number (273780).

Almost surely, 2^13323240 is an apocalyptic number.

13323240 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 13323240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26282880).

13323240 is an abundant number, since it is smaller than the sum of its proper divisors (39242520).

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

13323240 is a wasteful number, since it uses less digits than its factorization.

13323240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 13323240 is about 3650.1013684554. The cubic root of 13323240 is about 237.0663703451.

Adding to 13323240 its reverse (4232331), we get a palindrome (17555571).

Subtracting from 13323240 its reverse (4232331), we obtain a palindrome (9090909).

The spelling of 13323240 in words is "thirteen million, three hundred twenty-three thousand, two hundred forty".