20050385 has 8 divisors (see below), whose sum is σ = 24309096. Its totient is φ = 15874560.

The previous prime is 20050367. The next prime is 20050391. The reversal of 20050385 is 58305002.

It can be written as a sum of positive squares in 4 ways, for example, as 274576 + 19775809 = 524^2 + 4447^2 .

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

It is not a de Polignac number, because 20050385 - 2⁶ = 20050321 is a prime.

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 20050385.

It is an unprimeable number.

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, 20186 + ... + 21155.

It is an arithmetic number, because the mean of its divisors is an integer number (3038637).

Almost surely, 2^20050385 is an apocalyptic number.

It is an amenable number.

20050385 is a deficient number, since it is larger than the sum of its proper divisors (4258711).

20050385 is an equidigital number, since it uses as much as digits as its factorization.

20050385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41443.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20050385 is about 4477.7656258451. The cubic root of 20050385 is about 271.6695137310.

Adding to 20050385 its reverse (58305002), we get a palindrome (78355387).

The spelling of 20050385 in words is "twenty million, fifty thousand, three hundred eighty-five".