28873000 has 64 divisors (see below), whose sum is σ = 72792720. Its totient is φ = 10656000.

The previous prime is 28872983. The next prime is 28873001. The reversal of 28873000 is 37882.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 164836 + 28708164 = 406^2 + 5358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28873000.

It is not an unprimeable number, because it can be changed into a prime (28873001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11890 + ... + 14110.

Almost surely, 2^28873000 is an apocalyptic number.

28873000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28873000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36396360).

28873000 is an abundant number, since it is smaller than the sum of its proper divisors (43919720).

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

28873000 is a wasteful number, since it uses less digits than its factorization.

28873000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 28873000 is about 5373.3602149865. The cubic root of 28873000 is about 306.7825386537.

The spelling of 28873000 in words is "twenty-eight million, eight hundred seventy-three thousand".