13020729 has 8 divisors (see below), whose sum is σ = 17397120. Its totient is φ = 8662416.

The previous prime is 13020727. The next prime is 13020731. The reversal of 13020729 is 92702031.

13020729 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13020727) and next prime (13020731).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13020729 - 2¹ = 13020727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13020699 and 13020708.

It is not an unprimeable number, because it can be changed into a prime (13020727) 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 7 ways as a sum of consecutive naturals, for example, 2737 + ... + 5790.

It is an arithmetic number, because the mean of its divisors is an integer number (2174640).

Almost surely, 2^13020729 is an apocalyptic number.

It is an amenable number.

13020729 is a deficient number, since it is larger than the sum of its proper divisors (4376391).

13020729 is an equidigital number, since it uses as much as digits as its factorization.

13020729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9039.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 13020729 is about 3608.4247255555. The cubic root of 13020729 is about 235.2583788575.

The spelling of 13020729 in words is "thirteen million, twenty thousand, seven hundred twenty-nine".