204423000220 has 24 divisors (see below), whose sum is σ = 437388081984. Its totient is φ = 80226384576.

The previous prime is 204423000211. The next prime is 204423000293. The reversal of 204423000220 is 22000324402.

It is a super-2 number, since 2×204423000220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96424884 + ... + 96427003.

It is an arithmetic number, because the mean of its divisors is an integer number (18224503416).

Almost surely, 2^204423000220 is an apocalyptic number.

204423000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204423000220 is an abundant number, since it is smaller than the sum of its proper divisors (232965081764).

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

204423000220 is a wasteful number, since it uses less digits than its factorization.

204423000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192851949 (or 192851947 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 204423000220 its reverse (22000324402), we get a palindrome (226423324622).

The spelling of 204423000220 in words is "two hundred four billion, four hundred twenty-three million, two hundred twenty", and thus it is an aban number.