20204200 has 24 divisors (see below), whose sum is σ = 46975230. Its totient is φ = 8081600.

The previous prime is 20204179. The next prime is 20204203. The reversal of 20204200 is 240202.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8191044 + 12013156 = 2862^2 + 3466^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20204203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50311 + ... + 50710.

Almost surely, 2^20204200 is an apocalyptic number.

20204200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20204200 is an abundant number, since it is smaller than the sum of its proper divisors (26771030).

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

20204200 is a wasteful number, since it uses less digits than its factorization.

20204200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101037 (or 101028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 20204200 is about 4494.9082304314. The cubic root of 20204200 is about 272.3624421457.

Adding to 20204200 its reverse (240202), we get a palindrome (20444402).

The spelling of 20204200 in words is "twenty million, two hundred four thousand, two hundred".