28830641 has 8 divisors (see below), whose sum is σ = 32982720. Its totient is φ = 24686928.

The previous prime is 28830601. The next prime is 28830643. The reversal of 28830641 is 14603882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28830641 - 2¹⁰ = 28829617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28830598 and 28830607.

It is not an unprimeable number, because it can be changed into a prime (28830643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9890 + ... + 12468.

It is an arithmetic number, because the mean of its divisors is an integer number (4122840).

Almost surely, 2^28830641 is an apocalyptic number.

It is an amenable number.

28830641 is a deficient number, since it is larger than the sum of its proper divisors (4152079).

28830641 is a wasteful number, since it uses less digits than its factorization.

28830641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28830641 is about 5369.4171936999. The cubic root of 28830641 is about 306.6324403884.

The spelling of 28830641 in words is "twenty-eight million, eight hundred thirty thousand, six hundred forty-one".