2021303604 has 48 divisors (see below), whose sum is σ = 5027400000. Its totient is φ = 629869056.

The previous prime is 2021303593. The next prime is 2021303611. The reversal of 2021303604 is 4063031202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2854 + ... + 63645.

It is an arithmetic number, because the mean of its divisors is an integer number (104737500).

Almost surely, 2^2021303604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021303604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2513700000).

2021303604 is an abundant number, since it is smaller than the sum of its proper divisors (3006096396).

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

2021303604 is a wasteful number, since it uses less digits than its factorization.

2021303604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66672 (or 66670 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2021303604 is about 44958.9101736241. The cubic root of 2021303604 is about 1264.3787362170.

Adding to 2021303604 its reverse (4063031202), we get a palindrome (6084334806).

The spelling of 2021303604 in words is "two billion, twenty-one million, three hundred three thousand, six hundred four".