20320469 has 8 divisors (see below), whose sum is σ = 22589952. Its totient is φ = 18151920.

The previous prime is 20320463. The next prime is 20320483. The reversal of 20320469 is 96402302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20320469 - 2⁴ = 20320453 is a prime.

It is a super-2 number, since 2×20320469² = 825842920759922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320463) 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 7 ways as a sum of consecutive naturals, for example, 24809 + ... + 25614.

It is an arithmetic number, because the mean of its divisors is an integer number (2823744).

Almost surely, 2^20320469 is an apocalyptic number.

It is an amenable number.

20320469 is a deficient number, since it is larger than the sum of its proper divisors (2269483).

20320469 is a wasteful number, since it uses less digits than its factorization.

20320469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50467.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20320469 is about 4507.8230888091. The cubic root of 20320469 is about 272.8838973715.

The spelling of 20320469 in words is "twenty million, three hundred twenty thousand, four hundred sixty-nine".