13233457 has 4 divisors (see below), whose sum is σ = 13591156. Its totient is φ = 12875760.

The previous prime is 13233449. The next prime is 13233503. The reversal of 13233457 is 75433231.

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 10491121 + 2742336 = 3239^2 + 1656^2 .

It is a cyclic number.

It is not a de Polignac number, because 13233457 - 2³ = 13233449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13233757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178794 + ... + 178867.

It is an arithmetic number, because the mean of its divisors is an integer number (3397789).

Almost surely, 2^13233457 is an apocalyptic number.

It is an amenable number.

13233457 is a deficient number, since it is larger than the sum of its proper divisors (357699).

13233457 is an equidigital number, since it uses as much as digits as its factorization.

13233457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357698.

The product of its digits is 7560, while the sum is 28.

The square root of 13233457 is about 3637.7818791126. The cubic root of 13233457 is about 236.5326533051.

Adding to 13233457 its reverse (75433231), we get a palindrome (88666688).

The spelling of 13233457 in words is "thirteen million, two hundred thirty-three thousand, four hundred fifty-seven".