43422020 has 12 divisors (see below), whose sum is σ = 91186284. Its totient is φ = 17368800.

The previous prime is 43422017. The next prime is 43422023. The reversal of 43422020 is 2022434.

It is an interprime number because it is at equal distance from previous prime (43422017) and next prime (43422023).

It can be written as a sum of positive squares in 2 ways, for example, as 32239684 + 11182336 = 5678^2 + 3344^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43422020.

It is not an unprimeable number, because it can be changed into a prime (43422023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085531 + ... + 1085570.

It is an arithmetic number, because the mean of its divisors is an integer number (7598857).

Almost surely, 2^43422020 is an apocalyptic number.

It is an amenable number.

43422020 is an abundant number, since it is smaller than the sum of its proper divisors (47764264).

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

43422020 is a wasteful number, since it uses less digits than its factorization.

43422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171110 (or 2171108 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 43422020 is about 6589.5386788454. The cubic root of 43422020 is about 351.4822039961.

Adding to 43422020 its reverse (2022434), we get a palindrome (45444454).

The spelling of 43422020 in words is "forty-three million, four hundred twenty-two thousand, twenty".