8728443 has 12 divisors (see below), whose sum is σ = 12667200. Its totient is φ = 5791536.

The previous prime is 8728427. The next prime is 8728457. The reversal of 8728443 is 3448278.

It is not a de Polignac number, because 8728443 - 2⁴ = 8728427 is a prime.

8728443 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8728398 and 8728407.

It is not an unprimeable number, because it can be changed into a prime (8728483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168 + ... + 4181.

It is an arithmetic number, because the mean of its divisors is an integer number (1055600).

Almost surely, 2^8728443 is an apocalyptic number.

8728443 is a deficient number, since it is larger than the sum of its proper divisors (3938757).

8728443 is a wasteful number, since it uses less digits than its factorization.

8728443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578 (or 4575 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 8728443 is about 2954.3938464599. The cubic root of 8728443 is about 205.8949019306.

The spelling of 8728443 in words is "eight million, seven hundred twenty-eight thousand, four hundred forty-three".