43220020 has 12 divisors (see below), whose sum is σ = 90762084. Its totient is φ = 17288000.

The previous prime is 43220017. The next prime is 43220029. The reversal of 43220020 is 2002234.

43220020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24661156 + 18558864 = 4966^2 + 4308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43220029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1080481 + ... + 1080520.

It is an arithmetic number, because the mean of its divisors is an integer number (7563507).

Almost surely, 2^43220020 is an apocalyptic number.

It is an amenable number.

43220020 is an abundant number, since it is smaller than the sum of its proper divisors (47542064).

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

43220020 is a wasteful number, since it uses less digits than its factorization.

43220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161010 (or 2161008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 43220020 is about 6574.1934866567. The cubic root of 43220020 is about 350.9363228398.

Adding to 43220020 its reverse (2002234), we get a palindrome (45222254).

The spelling of 43220020 in words is "forty-three million, two hundred twenty thousand, twenty".