8428432 has 10 divisors (see below), whose sum is σ = 16330118. Its totient is φ = 4214208.

The previous prime is 8428423. The next prime is 8428439. The reversal of 8428432 is 2348248.

It can be written as a sum of positive squares in only one way, i.e., 8386816 + 41616 = 2896^2 + 204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8428394 and 8428403.

It is not an unprimeable number, because it can be changed into a prime (8428439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263373 + ... + 263404.

Almost surely, 2^8428432 is an apocalyptic number.

It is an amenable number.

8428432 is a deficient number, since it is larger than the sum of its proper divisors (7901686).

8428432 is a wasteful number, since it uses less digits than its factorization.

8428432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526785 (or 526779 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 8428432 is about 2903.1761916907. The cubic root of 8428432 is about 203.5083637273.

The spelling of 8428432 in words is "eight million, four hundred twenty-eight thousand, four hundred thirty-two".