28686150 has 84 divisors (see below), whose sum is σ = 80099412. Its totient is φ = 7639920.

The previous prime is 28686127. The next prime is 28686167. The reversal of 28686150 is 5168682.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 36057 + ... + 36843.

Almost surely, 2^28686150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28686150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40049706).

28686150 is an abundant number, since it is smaller than the sum of its proper divisors (51413262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28686150 is an equidigital number, since it uses as much as digits as its factorization.

28686150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28686150 is about 5355.9452947169. The cubic root of 28686150 is about 306.1193306213.

It can be divided in two parts, 286 and 86150, that added together give a square (86436 = 294²).

The spelling of 28686150 in words is "twenty-eight million, six hundred eighty-six thousand, one hundred fifty".