320020003200 has 192 divisors, whose sum is σ = 1054454274000. Its totient is φ = 85307228160.

The previous prime is 320020003153. The next prime is 320020003229. The reversal of 320020003200 is 2300020023.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38866284 + ... + 38874516.

Almost surely, 2^320020003200 is an apocalyptic number.

320020003200 is a gapful number since it is divisible by the number (30) 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 320020003200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527227137000).

320020003200 is an abundant number, since it is smaller than the sum of its proper divisors (734434270800).

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

320020003200 is a wasteful number, since it uses less digits than its factorization.

320020003200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12309 (or 12292 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

Adding to 320020003200 its reverse (2300020023), we get a palindrome (322320023223).

The spelling of 320020003200 in words is "three hundred twenty billion, twenty million, three thousand, two hundred".