2000021320 has 64 divisors (see below), whose sum is σ = 5167540800. Its totient is φ = 688999680.

The previous prime is 2000021311. The next prime is 2000021323. The reversal of 2000021320 is 231200002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2000021297 and 2000021306.

It is not an unprimeable number, because it can be changed into a prime (2000021323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111259 + ... + 127978.

It is an arithmetic number, because the mean of its divisors is an integer number (80742825).

Almost surely, 2^2000021320 is an apocalyptic number.

2000021320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000021320 is an abundant number, since it is smaller than the sum of its proper divisors (3167519480).

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

2000021320 is a wasteful number, since it uses less digits than its factorization.

2000021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239278 (or 239274 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2000021320 is about 44721.5979142070. The cubic root of 2000021320 is about 1259.9255267984.

Adding to 2000021320 its reverse (231200002), we get a palindrome (2231221322).

The spelling of 2000021320 in words is "two billion, twenty-one thousand, three hundred twenty".