204022020 has 96 divisors (see below), whose sum is σ = 583583616. Its totient is φ = 53248000.

The previous prime is 204022001. The next prime is 204022043. The reversal of 204022020 is 20220402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 204021987 and 204022005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793732 + ... + 793988.

It is an arithmetic number, because the mean of its divisors is an integer number (6078996).

Almost surely, 2^204022020 is an apocalyptic number.

204022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291791808).

204022020 is an abundant number, since it is smaller than the sum of its proper divisors (379561596).

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

204022020 is a wasteful number, since it uses less digits than its factorization.

204022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 204022020 is about 14283.6276904714. The cubic root of 204022020 is about 588.6977117387.

Adding to 204022020 its reverse (20220402), we get a palindrome (224242422).

It can be divided in two parts, 20402 and 2020, that added together give a palindrome (22422).

The spelling of 204022020 in words is "two hundred four million, twenty-two thousand, twenty".