200320506 has 64 divisors (see below), whose sum is σ = 459527040. Its totient is φ = 64644480.

The previous prime is 200320499. The next prime is 200320559. The reversal of 200320506 is 605023002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382761 + ... + 383283.

It is an arithmetic number, because the mean of its divisors is an integer number (7180110).

Almost surely, 2^200320506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200320506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229763520).

200320506 is an abundant number, since it is smaller than the sum of its proper divisors (259206534).

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

200320506 is a wasteful number, since it uses less digits than its factorization.

200320506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 200320506 is about 14153.4626858589. The cubic root of 200320506 is about 585.1157693301.

Adding to 200320506 its reverse (605023002), we get a palindrome (805343508).

The spelling of 200320506 in words is "two hundred million, three hundred twenty thousand, five hundred six".