43806728 has 16 divisors (see below), whose sum is σ = 93871680. Its totient is φ = 18774288.

The previous prime is 43806727. The next prime is 43806767. The reversal of 43806728 is 82760834.

It is a junction number, because it is equal to n+sod(n) for n = 43806691 and 43806700.

It is not an unprimeable number, because it can be changed into a prime (43806727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391076 + ... + 391187.

It is an arithmetic number, because the mean of its divisors is an integer number (5866980).

Almost surely, 2^43806728 is an apocalyptic number.

It is an amenable number.

43806728 is an abundant number, since it is smaller than the sum of its proper divisors (50064952).

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

43806728 is a wasteful number, since it uses less digits than its factorization.

43806728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782276 (or 782272 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 43806728 is about 6618.6651222131. The cubic root of 43806728 is about 352.5171676497.

The spelling of 43806728 in words is "forty-three million, eight hundred six thousand, seven hundred twenty-eight".