20320200 has 192 divisors, whose sum is σ = 72316800. Its totient is φ = 5241600.

The previous prime is 20320189. The next prime is 20320211. The reversal of 20320200 is 202302.

It is an interprime number because it is at equal distance from previous prime (20320189) and next prime (20320211).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286165 + ... + 286235.

It is an arithmetic number, because the mean of its divisors is an integer number (376650).

Almost surely, 2^20320200 is an apocalyptic number.

20320200 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 20320200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36158400).

20320200 is an abundant number, since it is smaller than the sum of its proper divisors (51996600).

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

20320200 is a wasteful number, since it uses less digits than its factorization.

20320200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 20320200 is about 4507.7932516920. The cubic root of 20320200 is about 272.8826932311.

Adding to 20320200 its reverse (202302), we get a palindrome (20522502).

The spelling of 20320200 in words is "twenty million, three hundred twenty thousand, two hundred".