10385729 has 4 divisors (see below), whose sum is σ = 10488660. Its totient is φ = 10282800.

The previous prime is 10385699. The next prime is 10385743. The reversal of 10385729 is 92758301.

10385729 is digitally balanced in base 2, 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 6385729 + 4000000 = 2527^2 + 2000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10385729 is a prime.

It is a super-2 number, since 2×10385729² = 215726733722882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10385129) 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, 51314 + ... + 51515.

It is an arithmetic number, because the mean of its divisors is an integer number (2622165).

Almost surely, 2^10385729 is an apocalyptic number.

It is an amenable number.

10385729 is a deficient number, since it is larger than the sum of its proper divisors (102931).

10385729 is a wasteful number, since it uses less digits than its factorization.

10385729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102930.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 10385729 is about 3222.6897151293. The cubic root of 10385729 is about 218.1786894490.

The spelling of 10385729 in words is "ten million, three hundred eighty-five thousand, seven hundred twenty-nine".