43678428 has 12 divisors (see below), whose sum is σ = 101916360. Its totient is φ = 14559472.

The previous prime is 43678391. The next prime is 43678447. The reversal of 43678428 is 82487634.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 43678428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1819923 + ... + 1819946.

It is an arithmetic number, because the mean of its divisors is an integer number (8493030).

Almost surely, 2^43678428 is an apocalyptic number.

It is an amenable number.

43678428 is an abundant number, since it is smaller than the sum of its proper divisors (58237932).

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

43678428 is a wasteful number, since it uses less digits than its factorization.

43678428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639876 (or 3639874 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 43678428 is about 6608.9657284631. The cubic root of 43678428 is about 352.1726834361.

The spelling of 43678428 in words is "forty-three million, six hundred seventy-eight thousand, four hundred twenty-eight".