2021743936 has 112 divisors (see below), whose sum is σ = 4268693520. Its totient is φ = 948879360.

The previous prime is 2021743879. The next prime is 2021743981. The reversal of 2021743936 is 6393471202.

It can be written as a sum of positive squares in 8 ways, for example, as 53934336 + 1967809600 = 7344^2 + 44360^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 2021743895 and 2021743904.

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, 11169766 + ... + 11169946.

It is an arithmetic number, because the mean of its divisors is an integer number (38113335).

Almost surely, 2^2021743936 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 2021743936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134346760).

2021743936 is an abundant number, since it is smaller than the sum of its proper divisors (2246949584).

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

2021743936 is a wasteful number, since it uses less digits than its factorization.

2021743936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 2021743936 is about 44963.8069562621. The cubic root of 2021743936 is about 1264.4705426455.

The spelling of 2021743936 in words is "two billion, twenty-one million, seven hundred forty-three thousand, nine hundred thirty-six".