13206240 has 120 divisors (see below), whose sum is σ = 46652760. Its totient is φ = 3518208.

The previous prime is 13206233. The next prime is 13206253. The reversal of 13206240 is 4260231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12451 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (388773).

Almost surely, 2^13206240 is an apocalyptic number.

13206240 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 13206240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23326380).

13206240 is an abundant number, since it is smaller than the sum of its proper divisors (33446520).

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

13206240 is a wasteful number, since it uses less digits than its factorization.

13206240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13206240 is about 3634.0390751889. The cubic root of 13206240 is about 236.3703846020.

Adding to 13206240 its reverse (4260231), we get a palindrome (17466471).

The spelling of 13206240 in words is "thirteen million, two hundred six thousand, two hundred forty".