9008428 has 24 divisors (see below), whose sum is σ = 18522000. Its totient is φ = 3779520.

The previous prime is 9008423. The next prime is 9008431. The reversal of 9008428 is 8248009.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9008428.

It is not an unprimeable number, because it can be changed into a prime (9008423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7303 + ... + 8446.

It is an arithmetic number, because the mean of its divisors is an integer number (771750).

Almost surely, 2^9008428 is an apocalyptic number.

It is an amenable number.

9008428 is an abundant number, since it is smaller than the sum of its proper divisors (9513572).

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

9008428 is a wasteful number, since it uses less digits than its factorization.

9008428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15777 (or 15775 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 9008428 is about 3001.4043379725. The cubic root of 9008428 is about 208.0732914795.

The spelling of 9008428 in words is "nine million, eight thousand, four hundred twenty-eight".