43220220 has 48 divisors (see below), whose sum is σ = 126282240. Its totient is φ = 11023936.

The previous prime is 43220209. The next prime is 43220251. The reversal of 43220220 is 2202234.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 43220220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14280 + ... + 17039.

It is an arithmetic number, because the mean of its divisors is an integer number (2630880).

Almost surely, 2^43220220 is an apocalyptic number.

It is an amenable number.

43220220 is an abundant number, since it is smaller than the sum of its proper divisors (83062020).

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

43220220 is a wasteful number, since it uses less digits than its factorization.

43220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31354 (or 31352 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 43220220 is about 6574.2086976305. The cubic root of 43220220 is about 350.9368641565.

Adding to 43220220 its reverse (2202234), we get a palindrome (45422454).

The spelling of 43220220 in words is "forty-three million, two hundred twenty thousand, two hundred twenty".