13152709 has 4 divisors (see below), whose sum is σ = 13159980. Its totient is φ = 13145440.

The previous prime is 13152707. The next prime is 13152719. The reversal of 13152709 is 90725131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11035684 + 2117025 = 3322^2 + 1455^2 .

It is a cyclic number.

It is not a de Polignac number, because 13152709 - 2¹ = 13152707 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 (13152707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449 + ... + 5329.

It is an arithmetic number, because the mean of its divisors is an integer number (3289995).

Almost surely, 2^13152709 is an apocalyptic number.

It is an amenable number.

13152709 is a deficient number, since it is larger than the sum of its proper divisors (7271).

13152709 is an equidigital number, since it uses as much as digits as its factorization.

13152709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7270.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 13152709 is about 3626.6663756127. Note that the first 3 decimals coincide. The cubic root of 13152709 is about 236.0505792673.

It can be divided in two parts, 13152 and 709, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 13152709 in words is "thirteen million, one hundred fifty-two thousand, seven hundred nine".