13257812 has 12 divisors (see below), whose sum is σ = 23270100. Its totient is φ = 6609216.

The previous prime is 13257793. The next prime is 13257817. The reversal of 13257812 is 21875231.

It can be written as a sum of positive squares in 2 ways, for example, as 4519876 + 8737936 = 2126^2 + 2956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257817) 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, 3353 + ... + 6144.

It is an arithmetic number, because the mean of its divisors is an integer number (1939175).

Almost surely, 2^13257812 is an apocalyptic number.

It is an amenable number.

13257812 is a deficient number, since it is larger than the sum of its proper divisors (10012288).

13257812 is a wasteful number, since it uses less digits than its factorization.

13257812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9850 (or 9848 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 13257812 is about 3641.1278472473. The cubic root of 13257812 is about 236.6776701446.

It can be divided in two parts, 1325781 and 2, that multiplied together give a palindrome (2651562).

The spelling of 13257812 in words is "thirteen million, two hundred fifty-seven thousand, eight hundred twelve".