20020385 has 32 divisors (see below), whose sum is σ = 30240000. Its totient is φ = 12360960.

The previous prime is 20020333. The next prime is 20020387. The reversal of 20020385 is 58302002.

It is not a de Polignac number, because 20020385 - 2¹⁴ = 20004001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57191 + ... + 57539.

It is an arithmetic number, because the mean of its divisors is an integer number (945000).

Almost surely, 2^20020385 is an apocalyptic number.

It is an amenable number.

20020385 is a deficient number, since it is larger than the sum of its proper divisors (10219615).

20020385 is a wasteful number, since it uses less digits than its factorization.

20020385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20020385 is about 4474.4144868351. The cubic root of 20020385 is about 271.5339526832.

Adding to 20020385 its reverse (58302002), we get a palindrome (78322387).

The spelling of 20020385 in words is "twenty million, twenty thousand, three hundred eighty-five".