43201664 has 64 divisors (see below), whose sum is σ = 95618880. Its totient is φ = 19276800.

The previous prime is 43201643. The next prime is 43201673. The reversal of 43201664 is 46610234.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85637 + ... + 86139.

It is an arithmetic number, because the mean of its divisors is an integer number (1494045).

Almost surely, 2^43201664 is an apocalyptic number.

43201664 is a gapful number since it is divisible by the number (44) 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 43201664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47809440).

43201664 is an abundant number, since it is smaller than the sum of its proper divisors (52417216).

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

43201664 is a wasteful number, since it uses less digits than its factorization.

43201664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 43201664 is about 6572.7972736119. The cubic root of 43201664 is about 350.8866336810.

Adding to 43201664 its reverse (46610234), we get a palindrome (89811898).

The spelling of 43201664 in words is "forty-three million, two hundred one thousand, six hundred sixty-four".