43222240 has 48 divisors (see below), whose sum is σ = 102846240. Its totient is φ = 17164800.

The previous prime is 43222237. The next prime is 43222247. The reversal of 43222240 is 4222234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43222247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23266 + ... + 25054.

It is an arithmetic number, because the mean of its divisors is an integer number (2142630).

Almost surely, 2^43222240 is an apocalyptic number.

43222240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43222240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51423120).

43222240 is an abundant number, since it is smaller than the sum of its proper divisors (59624000).

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

43222240 is a wasteful number, since it uses less digits than its factorization.

43222240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 43222240 is about 6574.3623264922. The cubic root of 43222240 is about 350.9423313616.

Adding to 43222240 its reverse (4222234), we get a palindrome (47444474).

The spelling of 43222240 in words is "forty-three million, two hundred twenty-two thousand, two hundred forty".