20338699 has 4 divisors (see below), whose sum is σ = 20811736. Its totient is φ = 19865664.

The previous prime is 20338663. The next prime is 20338709. The reversal of 20338699 is 99683302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20338699 - 2¹⁵ = 20305931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20338099) 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, 236454 + ... + 236539.

It is an arithmetic number, because the mean of its divisors is an integer number (5202934).

Almost surely, 2^20338699 is an apocalyptic number.

20338699 is a deficient number, since it is larger than the sum of its proper divisors (473037).

20338699 is an equidigital number, since it uses as much as digits as its factorization.

20338699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473036.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 20338699 is about 4509.8446758176. The cubic root of 20338699 is about 272.9654766328.

The spelling of 20338699 in words is "twenty million, three hundred thirty-eight thousand, six hundred ninety-nine".