10239805 has 16 divisors (see below), whose sum is σ = 12729024. Its totient is φ = 7902720.

The previous prime is 10239781. The next prime is 10239829. The reversal of 10239805 is 50893201.

It is an interprime number because it is at equal distance from previous prime (10239781) and next prime (10239829).

It is not a de Polignac number, because 10239805 - 2²¹ = 8142653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20610 + ... + 21100.

It is an arithmetic number, because the mean of its divisors is an integer number (795564).

Almost surely, 2^10239805 is an apocalyptic number.

It is an amenable number.

10239805 is a deficient number, since it is larger than the sum of its proper divisors (2489219).

10239805 is an equidigital number, since it uses as much as digits as its factorization.

10239805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 10239805 is about 3199.9695311049. The cubic root of 10239805 is about 217.1520309036.

The spelling of 10239805 in words is "ten million, two hundred thirty-nine thousand, eight hundred five".