28830432 has 24 divisors (see below), whose sum is σ = 75680136. Its totient is φ = 9610112.

The previous prime is 28830427. The next prime is 28830449. The reversal of 28830432 is 23403882.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28830432.

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, 150063 + ... + 150254.

It is an arithmetic number, because the mean of its divisors is an integer number (3153339).

Almost surely, 2^28830432 is an apocalyptic number.

It is an amenable number.

28830432 is an abundant number, since it is smaller than the sum of its proper divisors (46849704).

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

28830432 is a wasteful number, since it uses less digits than its factorization.

28830432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300330 (or 300322 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 28830432 is about 5369.3977315896. The cubic root of 28830432 is about 306.6316994367.

The spelling of 28830432 in words is "twenty-eight million, eight hundred thirty thousand, four hundred thirty-two".