28316288 has 192 divisors, whose sum is σ = 80637120. Its totient is φ = 9584640.

The previous prime is 28316279. The next prime is 28316311. The reversal of 28316288 is 88261382.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1665656 + ... + 1665672.

It is an arithmetic number, because the mean of its divisors is an integer number (419985).

Almost surely, 2^28316288 is an apocalyptic number.

28316288 is a gapful number since it is divisible by the number (28) 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 28316288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40318560).

28316288 is an abundant number, since it is smaller than the sum of its proper divisors (52320832).

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

28316288 is a wasteful number, since it uses less digits than its factorization.

28316288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 50 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 28316288 is about 5321.3051030739. The cubic root of 28316288 is about 304.7979957754.

It can be divided in two parts, 2831 and 6288, that added together give a palindrome (9119).

The spelling of 28316288 in words is "twenty-eight million, three hundred sixteen thousand, two hundred eighty-eight".