8427128 has 16 divisors (see below), whose sum is σ = 15855480. Its totient is φ = 4199008.

The previous prime is 8427113. The next prime is 8427161. The reversal of 8427128 is 8217248.

8427128 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8427094 and 8427103.

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, 875 + ... + 4197.

Almost surely, 2^8427128 is an apocalyptic number.

It is an amenable number.

8427128 is a deficient number, since it is larger than the sum of its proper divisors (7428352).

8427128 is a wasteful number, since it uses less digits than its factorization.

8427128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646 (or 3642 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 8427128 is about 2902.9516013878. The cubic root of 8427128 is about 203.4978679596.

The spelling of 8427128 in words is "eight million, four hundred twenty-seven thousand, one hundred twenty-eight".