200104020 has 120 divisors (see below), whose sum is σ = 632709000. Its totient is φ = 52939008.

The previous prime is 200104019. The next prime is 200104027. The reversal of 200104020 is 20401002.

It can be written as a sum of positive squares in 4 ways, for example, as 3992004 + 196112016 = 1998^2 + 14004^2 .

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 = 200103993 and 200104011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200104027) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 240966 + ... + 241794.

It is an arithmetic number, because the mean of its divisors is an integer number (5272575).

Almost surely, 2^200104020 is an apocalyptic number.

200104020 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 200104020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316354500).

200104020 is an abundant number, since it is smaller than the sum of its proper divisors (432604980).

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

200104020 is a wasteful number, since it uses less digits than its factorization.

200104020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 200104020 is about 14145.8128080362. The cubic root of 200104020 is about 584.9049155125.

Adding to 200104020 its reverse (20401002), we get a palindrome (220505022).

The spelling of 200104020 in words is "two hundred million, one hundred four thousand, twenty".