2021520384 has 264 divisors, whose sum is σ = 6437733120. Its totient is φ = 607076352.

The previous prime is 2021520377. The next prime is 2021520437. The reversal of 2021520384 is 4830251202.

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, 5630797 + ... + 5631155.

Almost surely, 2^2021520384 is an apocalyptic number.

2021520384 is a gapful number since it is divisible by the number (24) 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 2021520384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3218866560).

2021520384 is an abundant number, since it is smaller than the sum of its proper divisors (4416212736).

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

2021520384 is a wasteful number, since it uses less digits than its factorization.

2021520384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2021520384 is about 44961.3209770354. The cubic root of 2021520384 is about 1264.4239351378.

Adding to 2021520384 its reverse (4830251202), we get a palindrome (6851771586).

The spelling of 2021520384 in words is "two billion, twenty-one million, five hundred twenty thousand, three hundred eighty-four".