43220164 has 24 divisors (see below), whose sum is σ = 81780608. Its totient is φ = 19867680.

The previous prime is 43220143. The next prime is 43220183. The reversal of 43220164 is 46102234.

It is a happy number.

43220164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12559 + ... + 15625.

Almost surely, 2^43220164 is an apocalyptic number.

It is an amenable number.

43220164 is a deficient number, since it is larger than the sum of its proper divisors (38560444).

43220164 is a wasteful number, since it uses less digits than its factorization.

43220164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355 (or 3353 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 43220164 is about 6574.2044385614. The cubic root of 43220164 is about 350.9367125880.

Adding to 43220164 its reverse (46102234), we get a palindrome (89322398).

The spelling of 43220164 in words is "forty-three million, two hundred twenty thousand, one hundred sixty-four".