43223040 has 288 divisors, whose sum is σ = 173759040. Its totient is φ = 9732096.

The previous prime is 43223039. The next prime is 43223069. The reversal of 43223040 is 4032234.

43223040 is a `hidden beast` number, since 432 + 230 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645087 + ... + 645153.

It is an arithmetic number, because the mean of its divisors is an integer number (603330).

Almost surely, 2^43223040 is an apocalyptic number.

43223040 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 43223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86879520).

43223040 is an abundant number, since it is smaller than the sum of its proper divisors (130536000).

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

43223040 is a wasteful number, since it uses less digits than its factorization.

43223040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 43223040 is about 6574.4231686133. The cubic root of 43223040 is about 350.9444965443.

Adding to 43223040 its reverse (4032234), we get a palindrome (47255274).

The spelling of 43223040 in words is "forty-three million, two hundred twenty-three thousand, forty".