13332240 has 60 divisors (see below), whose sum is σ = 44776524. Its totient is φ = 3555072.

The previous prime is 13332223. The next prime is 13332251. The reversal of 13332240 is 4223331.

13332240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4260096 + 9072144 = 2064^2 + 3012^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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 11 ways as a sum of consecutive naturals, for example, 8539 + ... + 9978.

Almost surely, 2^13332240 is an apocalyptic number.

13332240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13332240 is an abundant number, since it is smaller than the sum of its proper divisors (31444284).

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

13332240 is a wasteful number, since it uses less digits than its factorization.

13332240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18536 (or 18527 counting only the distinct ones).

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

The square root of 13332240 is about 3651.3340027995. The cubic root of 13332240 is about 237.1197386721.

Adding to 13332240 its reverse (4223331), we get a palindrome (17555571).

The spelling of 13332240 in words is "thirteen million, three hundred thirty-two thousand, two hundred forty".