13040733 has 4 divisors (see below), whose sum is σ = 17387648. Its totient is φ = 8693820.

The previous prime is 13040693. The next prime is 13040743. The reversal of 13040733 is 33704031.

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: 33704031 = 3 ⋅11234677.

It is not a de Polignac number, because 13040733 - 2¹⁰ = 13039709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040743) 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, 2173453 + ... + 2173458.

It is an arithmetic number, because the mean of its divisors is an integer number (4346912).

Almost surely, 2^13040733 is an apocalyptic number.

It is an amenable number.

13040733 is a deficient number, since it is larger than the sum of its proper divisors (4346915).

13040733 is an equidigital number, since it uses as much as digits as its factorization.

13040733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346914.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 13040733 is about 3611.1955084155. The cubic root of 13040733 is about 235.3787945586.

Adding to 13040733 its reverse (33704031), we get a palindrome (46744764).

The spelling of 13040733 in words is "thirteen million, forty thousand, seven hundred thirty-three".