8432428 has 24 divisors (see below), whose sum is σ = 15644720. Its totient is φ = 3965760.

The previous prime is 8432407. The next prime is 8432441. The reversal of 8432428 is 8242348.

It is a super-2 number, since 2×8432428² = 142211683950368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8432428.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13450 + ... + 14062.

Almost surely, 2^8432428 is an apocalyptic number.

It is an amenable number.

8432428 is a deficient number, since it is larger than the sum of its proper divisors (7212292).

8432428 is a wasteful number, since it uses less digits than its factorization.

8432428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 815 counting only the distinct ones).

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

The square root of 8432428 is about 2903.8643218994. The cubic root of 8432428 is about 203.5405203980.

The spelling of 8432428 in words is "eight million, four hundred thirty-two thousand, four hundred twenty-eight".