13440733 has 4 divisors (see below), whose sum is σ = 14148160. Its totient is φ = 12733308.

The previous prime is 13440709. The next prime is 13440751. The reversal of 13440733 is 33704431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33704431 = 199 ⋅169369.

It is a cyclic number.

It is not a de Polignac number, because 13440733 - 2⁹ = 13440221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13440698 and 13440707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440233) 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, 353685 + ... + 353722.

It is an arithmetic number, because the mean of its divisors is an integer number (3537040).

Almost surely, 2^13440733 is an apocalyptic number.

It is an amenable number.

13440733 is a deficient number, since it is larger than the sum of its proper divisors (707427).

13440733 is an equidigital number, since it uses as much as digits as its factorization.

13440733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707426.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 13440733 is about 3666.1605256726. The cubic root of 13440733 is about 237.7612003482.

The spelling of 13440733 in words is "thirteen million, four hundred forty thousand, seven hundred thirty-three".