2021446044 has 72 divisors (see below), whose sum is σ = 5481818160. Its totient is φ = 650571264.

The previous prime is 2021445997. The next prime is 2021446051. The reversal of 2021446044 is 4406441202.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2021445999 and 2021446017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7669 + ... + 64044.

Almost surely, 2^2021446044 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 2021446044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2740909080).

2021446044 is an abundant number, since it is smaller than the sum of its proper divisors (3460372116).

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

2021446044 is a wasteful number, since it uses less digits than its factorization.

2021446044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71761 (or 71747 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 2021446044 is about 44960.4942588491. The cubic root of 2021446044 is about 1264.4084355122.

Adding to 2021446044 its reverse (4406441202), we get a palindrome (6427887246).

The spelling of 2021446044 in words is "two billion, twenty-one million, four hundred forty-six thousand, forty-four".