20345383 has 8 divisors (see below), whose sum is σ = 20764800. Its totient is φ = 19928568.

The previous prime is 20345359. The next prime is 20345411. The reversal of 20345383 is 38354302.

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 20345383 - 2⁹ = 20344871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24310 + ... + 25132.

It is an arithmetic number, because the mean of its divisors is an integer number (2595600).

Almost surely, 2^20345383 is an apocalyptic number.

20345383 is a deficient number, since it is larger than the sum of its proper divisors (419417).

20345383 is an equidigital number, since it uses as much as digits as its factorization.

20345383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 20345383 is about 4510.5856604215. The cubic root of 20345383 is about 272.9953753236.

Adding to 20345383 its reverse (38354302), we get a palindrome (58699685).

The spelling of 20345383 in words is "twenty million, three hundred forty-five thousand, three hundred eighty-three".