28847588 has 48 divisors (see below), whose sum is σ = 63369600. Its totient is φ = 11162880.

The previous prime is 28847579. The next prime is 28847591. The reversal of 28847588 is 88574882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70328 + ... + 70736.

It is an arithmetic number, because the mean of its divisors is an integer number (1320200).

Almost surely, 2^28847588 is an apocalyptic number.

28847588 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 28847588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31684800).

28847588 is an abundant number, since it is smaller than the sum of its proper divisors (34522012).

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

28847588 is a wasteful number, since it uses less digits than its factorization.

28847588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 658 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 50.

The square root of 28847588 is about 5370.9950660934. The cubic root of 28847588 is about 306.6925093744.

The spelling of 28847588 in words is "twenty-eight million, eight hundred forty-seven thousand, five hundred eighty-eight".