13333240 has 16 divisors (see below), whose sum is σ = 29999880. Its totient is φ = 5333280.

The previous prime is 13333223. The next prime is 13333249. The reversal of 13333240 is 4233331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13333249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166626 + ... + 166705.

Almost surely, 2^13333240 is an apocalyptic number.

13333240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13333240 is an abundant number, since it is smaller than the sum of its proper divisors (16666640).

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

13333240 is a wasteful number, since it uses less digits than its factorization.

13333240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333342 (or 333338 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 13333240 is about 3651.4709364857. The cubic root of 13333240 is about 237.1256670035.

Adding to 13333240 its reverse (4233331), we get a palindrome (17566571).

Subtracting from 13333240 its reverse (4233331), we obtain a palindrome (9099909).

The spelling of 13333240 in words is "thirteen million, three hundred thirty-three thousand, two hundred forty".