28684858 has 8 divisors (see below), whose sum is σ = 44415360. Its totient is φ = 13879740.

The previous prime is 28684853. The next prime is 28684867. The reversal of 28684858 is 85848682.

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

It is not an unprimeable number, because it can be changed into a prime (28684853) 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, 231268 + ... + 231391.

It is an arithmetic number, because the mean of its divisors is an integer number (5551920).

Almost surely, 2^28684858 is an apocalyptic number.

28684858 is a deficient number, since it is larger than the sum of its proper divisors (15730502).

28684858 is a wasteful number, since it uses less digits than its factorization.

28684858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462692.

The product of its digits is 983040, while the sum is 49.

The square root of 28684858 is about 5355.8246797295. The cubic root of 28684858 is about 306.1147347668.

The spelling of 28684858 in words is "twenty-eight million, six hundred eighty-four thousand, eight hundred fifty-eight".