20450200 has 24 divisors (see below), whose sum is σ = 47547180. Its totient is φ = 8180000.

The previous prime is 20450149. The next prime is 20450207. The reversal of 20450200 is 205402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450207) 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, 50926 + ... + 51325.

Almost surely, 2^20450200 is an apocalyptic number.

20450200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20450200 is an abundant number, since it is smaller than the sum of its proper divisors (27096980).

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

20450200 is a wasteful number, since it uses less digits than its factorization.

20450200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102267 (or 102258 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 20450200 is about 4522.1897350730. The cubic root of 20450200 is about 273.4633857943.

Adding to 20450200 its reverse (205402), we get a palindrome (20655602).

The spelling of 20450200 in words is "twenty million, four hundred fifty thousand, two hundred".