28678850 has 24 divisors (see below), whose sum is σ = 54587280. Its totient is φ = 11203920.

The previous prime is 28678829. The next prime is 28678879. The reversal of 28678850 is 5887682.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 4520 + ... + 8819.

It is an arithmetic number, because the mean of its divisors is an integer number (2274470).

Almost surely, 2^28678850 is an apocalyptic number.

28678850 is a deficient number, since it is larger than the sum of its proper divisors (25908430).

28678850 is a wasteful number, since it uses less digits than its factorization.

28678850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13394 (or 13389 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 28678850 is about 5355.2637656795. The cubic root of 28678850 is about 306.0933615189.

The spelling of 28678850 in words is "twenty-eight million, six hundred seventy-eight thousand, eight hundred fifty".