10502309 has 4 divisors (see below), whose sum is σ = 10674540. Its totient is φ = 10330080.

The previous prime is 10502281. The next prime is 10502341. The reversal of 10502309 is 90320501.

10502309 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5189284 + 5313025 = 2278^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10502309 is a prime.

It is a super-2 number, since 2×10502309² = 220596988662962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10502369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86024 + ... + 86145.

It is an arithmetic number, because the mean of its divisors is an integer number (2668635).

Almost surely, 2^10502309 is an apocalyptic number.

It is an amenable number.

10502309 is a deficient number, since it is larger than the sum of its proper divisors (172231).

10502309 is an equidigital number, since it uses as much as digits as its factorization.

10502309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172230.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 10502309 is about 3240.7266160539. The cubic root of 10502309 is about 218.9920071032.

The spelling of 10502309 in words is "ten million, five hundred two thousand, three hundred nine".