2021800924 has 96 divisors (see below), whose sum is σ = 4362978816. Its totient is φ = 806657280.

The previous prime is 2021800909. The next prime is 2021800933. The reversal of 2021800924 is 4290081202.

It is a junction number, because it is equal to n+sod(n) for n = 2021800892 and 2021800901.

It is a congruent number.

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, 2986074 + ... + 2986750.

It is an arithmetic number, because the mean of its divisors is an integer number (45447696).

Almost surely, 2^2021800924 is an apocalyptic number.

It is an amenable number.

2021800924 is an abundant number, since it is smaller than the sum of its proper divisors (2341177892).

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

2021800924 is a wasteful number, since it uses less digits than its factorization.

2021800924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2021800924 is about 44964.4406614827. The cubic root of 2021800924 is about 1264.4824233077.

The spelling of 2021800924 in words is "two billion, twenty-one million, eight hundred thousand, nine hundred twenty-four".