43222220 has 24 divisors (see below), whose sum is σ = 92307600. Its totient is φ = 16995392.

The previous prime is 43222219. The next prime is 43222229. The reversal of 43222220 is 2222234.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (43222229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17135 + ... + 19494.

It is an arithmetic number, because the mean of its divisors is an integer number (3846150).

Almost surely, 2^43222220 is an apocalyptic number.

It is an amenable number.

43222220 is an abundant number, since it is smaller than the sum of its proper divisors (49085380).

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

43222220 is a wasteful number, since it uses less digits than its factorization.

43222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36697 (or 36695 counting only the distinct ones).

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

The square root of 43222220 is about 6574.3608054320. The cubic root of 43222220 is about 350.9422772317.

Adding to 43222220 its reverse (2222234), we get a palindrome (45444454).

The spelling of 43222220 in words is "forty-three million, two hundred twenty-two thousand, two hundred twenty".