13204240 has 160 divisors (see below), whose sum is σ = 39640320. Its totient is φ = 3981312.

The previous prime is 13204237. The next prime is 13204241. The reversal of 13204240 is 4240231.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180844 + ... + 180916.

It is an arithmetic number, because the mean of its divisors is an integer number (247752).

Almost surely, 2^13204240 is an apocalyptic number.

13204240 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 13204240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19820160).

13204240 is an abundant number, since it is smaller than the sum of its proper divisors (26436080).

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

13204240 is a wasteful number, since it uses less digits than its factorization.

13204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13204240 is about 3633.7638888623. The cubic root of 13204240 is about 236.3584517421.

Adding to 13204240 its reverse (4240231), we get a palindrome (17444471).

The spelling of 13204240 in words is "thirteen million, two hundred four thousand, two hundred forty".