28985858 has 16 divisors (see below), whose sum is σ = 48211200. Its totient is φ = 12958800.

The previous prime is 28985783. The next prime is 28985861. The reversal of 28985858 is 85858982.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9458 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (3013200).

Almost surely, 2^28985858 is an apocalyptic number.

28985858 is a deficient number, since it is larger than the sum of its proper divisors (19225342).

28985858 is a wasteful number, since it uses less digits than its factorization.

28985858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21673.

The product of its digits is 1843200, while the sum is 53.

The square root of 28985858 is about 5383.8515952801. The cubic root of 28985858 is about 307.1817334087.

The spelling of 28985858 in words is "twenty-eight million, nine hundred eighty-five thousand, eight hundred fifty-eight".