43168728 has 16 divisors (see below), whose sum is σ = 107921880. Its totient is φ = 14389568.

The previous prime is 43168721. The next prime is 43168739. The reversal of 43168728 is 82786134.

43168728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43168721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899325 + ... + 899372.

Almost surely, 2^43168728 is an apocalyptic number.

It is an amenable number.

43168728 is an abundant number, since it is smaller than the sum of its proper divisors (64753152).

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

43168728 is a wasteful number, since it uses less digits than its factorization.

43168728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798706 (or 1798702 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 43168728 is about 6570.2913177423. The cubic root of 43168728 is about 350.7974415895.

The spelling of 43168728 in words is "forty-three million, one hundred sixty-eight thousand, seven hundred twenty-eight".