20335369 has 4 divisors (see below), whose sum is σ = 20344644. Its totient is φ = 20326096.

The previous prime is 20335333. The next prime is 20335379. The reversal of 20335369 is 96353302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6734025 + 13601344 = 2595^2 + 3688^2 .

It is a cyclic number.

It is not a de Polignac number, because 20335369 - 2¹⁷ = 20204297 is a prime.

It is a super-2 number, since 2×20335369² = 827054464732322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20335369.

It is not an unprimeable number, because it can be changed into a prime (20335319) 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, 699 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (5086161).

Almost surely, 2^20335369 is an apocalyptic number.

It is an amenable number.

20335369 is a deficient number, since it is larger than the sum of its proper divisors (9275).

20335369 is an equidigital number, since it uses as much as digits as its factorization.

20335369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9274.

The product of its (nonzero) digits is 14580, while the sum is 31.

The square root of 20335369 is about 4509.4754683888. The cubic root of 20335369 is about 272.9505785208.

The spelling of 20335369 in words is "twenty million, three hundred thirty-five thousand, three hundred sixty-nine".