443243020 has 72 divisors (see below), whose sum is σ = 1071877968. Its totient is φ = 152668800.

The previous prime is 443242981. The next prime is 443243029. The reversal of 443243020 is 20342344.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 443242982 and 443243000.

It is not an unprimeable number, because it can be changed into a prime (443243029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76630 + ... + 82210.

It is an arithmetic number, because the mean of its divisors is an integer number (14887194).

Almost surely, 2^443243020 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 443243020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535938984).

443243020 is an abundant number, since it is smaller than the sum of its proper divisors (628634948).

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

443243020 is a wasteful number, since it uses less digits than its factorization.

443243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639 (or 5618 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 443243020 is about 21053.3375026384. The cubic root of 443243020 is about 762.4545639861.

Adding to 443243020 its reverse (20342344), we get a palindrome (463585364).

The spelling of 443243020 in words is "four hundred forty-three million, two hundred forty-three thousand, twenty".