20520003200 has 96 divisors (see below), whose sum is σ = 50932737120. Its totient is φ = 8168832000.

The previous prime is 20520003191. The next prime is 20520003263. The reversal of 20520003200 is 230002502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660005 + ... + 690395.

It is an arithmetic number, because the mean of its divisors is an integer number (530549345).

Almost surely, 2^20520003200 is an apocalyptic number.

20520003200 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 20520003200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25466368560).

20520003200 is an abundant number, since it is smaller than the sum of its proper divisors (30412733920).

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

20520003200 is a wasteful number, since it uses less digits than its factorization.

20520003200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30626 (or 30609 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

Adding to 20520003200 its reverse (230002502), we get a palindrome (20750005702).

The spelling of 20520003200 in words is "twenty billion, five hundred twenty million, three thousand, two hundred".