2021052816 has 160 divisors (see below), whose sum is σ = 5974974720. Its totient is φ = 653792256.

The previous prime is 2021052809. The next prime is 2021052823. The reversal of 2021052816 is 6182501202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2021052809) and next prime (2021052823).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2021052816.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2357860 + ... + 2358716.

It is an arithmetic number, because the mean of its divisors is an integer number (37343592).

Almost surely, 2^2021052816 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 2021052816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2987487360).

2021052816 is an abundant number, since it is smaller than the sum of its proper divisors (3953921904).

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

2021052816 is a wasteful number, since it uses less digits than its factorization.

2021052816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2021052816 is about 44956.1210070442. The cubic root of 2021052816 is about 1264.3264425505.

The spelling of 2021052816 in words is "two billion, twenty-one million, fifty-two thousand, eight hundred sixteen".