28658830 has 16 divisors (see below), whose sum is σ = 52240320. Its totient is φ = 11318112.

The previous prime is 28658813. The next prime is 28658857. The reversal of 28658830 is 3885682.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17349 + ... + 18928.

It is an arithmetic number, because the mean of its divisors is an integer number (3265020).

Almost surely, 2^28658830 is an apocalyptic number.

28658830 is a deficient number, since it is larger than the sum of its proper divisors (23581490).

28658830 is a wasteful number, since it uses less digits than its factorization.

28658830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36363.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28658830 is about 5353.3942503798. The cubic root of 28658830 is about 306.0221195225.

The spelling of 28658830 in words is "twenty-eight million, six hundred fifty-eight thousand, eight hundred thirty".