43229664 has 72 divisors (see below), whose sum is σ = 123570720. Its totient is φ = 14335488.

The previous prime is 43229629. The next prime is 43229671. The reversal of 43229664 is 46692234.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 105492 + ... + 105900.

It is an arithmetic number, because the mean of its divisors is an integer number (1716260).

Almost surely, 2^43229664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43229664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61785360).

43229664 is an abundant number, since it is smaller than the sum of its proper divisors (80341056).

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

43229664 is a wasteful number, since it uses less digits than its factorization.

43229664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 781 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 43229664 is about 6574.9269197460. The cubic root of 43229664 is about 350.9624232303.

The spelling of 43229664 in words is "forty-three million, two hundred twenty-nine thousand, six hundred sixty-four".