28008830 has 8 divisors (see below), whose sum is σ = 50415912. Its totient is φ = 11203528.

The previous prime is 28008829. The next prime is 28008833. The reversal of 28008830 is 3880082.

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

It is a junction number, because it is equal to n+sod(n) for n = 28008793 and 28008802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28008833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400432 + ... + 1400451.

It is an arithmetic number, because the mean of its divisors is an integer number (6301989).

Almost surely, 2^28008830 is an apocalyptic number.

28008830 is a deficient number, since it is larger than the sum of its proper divisors (22407082).

28008830 is a wasteful number, since it uses less digits than its factorization.

28008830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800890.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28008830 is about 5292.3369129336. The cubic root of 28008830 is about 303.6908141668.

The spelling of 28008830 in words is "twenty-eight million, eight thousand, eight hundred thirty".