20020338 has 96 divisors (see below), whose sum is σ = 51206400. Its totient is φ = 5762016.

The previous prime is 20020333. The next prime is 20020387. The reversal of 20020338 is 83302002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 20020338.

It is not an unprimeable number, because it can be changed into a prime (20020331) 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 47 ways as a sum of consecutive naturals, for example, 253383 + ... + 253461.

It is an arithmetic number, because the mean of its divisors is an integer number (533400).

Almost surely, 2^20020338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25603200).

20020338 is an abundant number, since it is smaller than the sum of its proper divisors (31186062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020338 is a wasteful number, since it uses less digits than its factorization.

20020338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20020338 is about 4474.4092347482. The cubic root of 20020338 is about 271.5337401980.

The spelling of 20020338 in words is "twenty million, twenty thousand, three hundred thirty-eight".