43040220 has 48 divisors (see below), whose sum is σ = 121003008. Its totient is φ = 11430720.

The previous prime is 43040219. The next prime is 43040233. The reversal of 43040220 is 2204034.

It is a happy number.

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

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 43040220.

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, 14937 + ... + 17583.

It is an arithmetic number, because the mean of its divisors is an integer number (2520896).

Almost surely, 2^43040220 is an apocalyptic number.

It is an amenable number.

43040220 is an abundant number, since it is smaller than the sum of its proper divisors (77962788).

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

43040220 is a wasteful number, since it uses less digits than its factorization.

43040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930 (or 2928 counting only the distinct ones).

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

The square root of 43040220 is about 6560.5045537672. The cubic root of 43040220 is about 350.4490019770.

Adding to 43040220 its reverse (2204034), we get a palindrome (45244254).

The spelling of 43040220 in words is "forty-three million, forty thousand, two hundred twenty".