20003022 has 48 divisors (see below), whose sum is σ = 47353488. Its totient is φ = 6065280.

The previous prime is 20003003. The next prime is 20003023. The reversal of 20003022 is 22030002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20002995 and 20003013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16497 + ... + 17667.

It is an arithmetic number, because the mean of its divisors is an integer number (986531).

Almost surely, 2^20003022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23676744).

20003022 is an abundant number, since it is smaller than the sum of its proper divisors (27350466).

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

20003022 is a wasteful number, since it uses less digits than its factorization.

20003022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 20003022 is about 4472.4738121089. The cubic root of 20003022 is about 271.4554325877.

Adding to 20003022 its reverse (22030002), we get a palindrome (42033024).

The spelling of 20003022 in words is "twenty million, three thousand, twenty-two".