28584336 has 80 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 8453760.

The previous prime is 28584323. The next prime is 28584337. The reversal of 28584336 is 63348582.

It is a junction number, because it is equal to n+sod(n) for n = 28584294 and 28584303.

It is not an unprimeable number, because it can be changed into a prime (28584337) 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, 22075 + ... + 23333.

It is an arithmetic number, because the mean of its divisors is an integer number (1031184).

Almost surely, 2^28584336 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 28584336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41247360).

28584336 is an abundant number, since it is smaller than the sum of its proper divisors (53910384).

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

28584336 is a wasteful number, since it uses less digits than its factorization.

28584336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1318 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 28584336 is about 5346.4320813043. The cubic root of 28584336 is about 305.7567377588.

It can be divided in two parts, 28584 and 336, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 28584336 in words is "twenty-eight million, five hundred eighty-four thousand, three hundred thirty-six".