987228 has 60 divisors (see below), whose sum is σ = 2825592. Its totient is φ = 298080.

The previous prime is 987227. The next prime is 987251. The reversal of 987228 is 822789.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 987192 and 987201.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987228.

It is not an unprimeable number, because it can be changed into a prime (987227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3426 + ... + 3702.

2⁹⁸⁷²²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 987228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412796).

987228 is an abundant number, since it is smaller than the sum of its proper divisors (1838364).

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

987228 is a wasteful number, since it uses less digits than its factorization.

987228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 293 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 987228 is about 993.5934782395. The cubic root of 987228 is about 99.5724412068.

The spelling of 987228 in words is "nine hundred eighty-seven thousand, two hundred twenty-eight".