13208357 has 4 divisors (see below), whose sum is σ = 13220460. Its totient is φ = 13196256.

The previous prime is 13208347. The next prime is 13208359. The reversal of 13208357 is 75380231.

13208357 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 470596 + 12737761 = 686^2 + 3569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13208357 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 (13208359) 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, 4232 + ... + 6657.

It is an arithmetic number, because the mean of its divisors is an integer number (3305115).

Almost surely, 2^13208357 is an apocalyptic number.

It is an amenable number.

13208357 is a deficient number, since it is larger than the sum of its proper divisors (12103).

13208357 is a wasteful number, since it uses less digits than its factorization.

13208357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12102.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 13208357 is about 3634.3303372148. The cubic root of 13208357 is about 236.3830142218.

Adding to 13208357 its reverse (75380231), we get a palindrome (88588588).

The spelling of 13208357 in words is "thirteen million, two hundred eight thousand, three hundred fifty-seven".