10240729 has 4 divisors (see below), whose sum is σ = 10253284. Its totient is φ = 10228176.

The previous prime is 10240723. The next prime is 10240733. The reversal of 10240729 is 92704201.

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 8690704 + 1550025 = 2948^2 + 1245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10240729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10240723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4962 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (2563321).

Almost surely, 2^10240729 is an apocalyptic number.

It is an amenable number.

10240729 is a deficient number, since it is larger than the sum of its proper divisors (12555).

10240729 is an equidigital number, since it uses as much as digits as its factorization.

10240729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12554.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 10240729 is about 3200.1139042228. The cubic root of 10240729 is about 217.1585623575.

The spelling of 10240729 in words is "ten million, two hundred forty thousand, seven hundred twenty-nine".