13157029 has 4 divisors (see below), whose sum is σ = 13372780. Its totient is φ = 12941280.

The previous prime is 13157021. The next prime is 13157033. The reversal of 13157029 is 92075131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92075131 = 1103 ⋅83477.

It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 12264004 = 945^2 + 3502^2 .

It is a cyclic number.

It is not a de Polignac number, because 13157029 - 2³ = 13157021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13156988 and 13157006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13157021) 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, 107784 + ... + 107905.

It is an arithmetic number, because the mean of its divisors is an integer number (3343195).

Almost surely, 2^13157029 is an apocalyptic number.

It is an amenable number.

13157029 is a deficient number, since it is larger than the sum of its proper divisors (215751).

13157029 is an equidigital number, since it uses as much as digits as its factorization.

13157029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215750.

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

The square root of 13157029 is about 3627.2619149987. The cubic root of 13157029 is about 236.0764199992.

The spelling of 13157029 in words is "thirteen million, one hundred fifty-seven thousand, twenty-nine".