13257029 has 4 divisors (see below), whose sum is σ = 13565376. Its totient is φ = 12948684.

The previous prime is 13257017. The next prime is 13257043. The reversal of 13257029 is 92075231.

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: 92075231 = 271 ⋅339761.

It is a cyclic number.

It is not a de Polignac number, because 13257029 - 2¹² = 13252933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13256992 and 13257010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257329) 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, 154109 + ... + 154194.

It is an arithmetic number, because the mean of its divisors is an integer number (3391344).

Almost surely, 2^13257029 is an apocalyptic number.

It is an amenable number.

13257029 is a deficient number, since it is larger than the sum of its proper divisors (308347).

13257029 is an equidigital number, since it uses as much as digits as its factorization.

13257029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308346.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 13257029 is about 3641.0203240301. The cubic root of 13257029 is about 236.6730106964.

The spelling of 13257029 in words is "thirteen million, two hundred fifty-seven thousand, twenty-nine".