28066048 has 36 divisors (see below), whose sum is σ = 59327100. Its totient is φ = 13205504.

The previous prime is 28066043. The next prime is 28066069. The reversal of 28066048 is 84066082.

It can be written as a sum of positive squares in 2 ways, for example, as 25080064 + 2985984 = 5008^2 + 1728^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (28066043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1128 + ... + 7576.

It is an arithmetic number, because the mean of its divisors is an integer number (1647975).

Almost surely, 2^28066048 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 28066048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29663550).

28066048 is an abundant number, since it is smaller than the sum of its proper divisors (31261052).

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

28066048 is an equidigital number, since it uses as much as digits as its factorization.

28066048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482 (or 6468 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 28066048 is about 5297.7398954649. The cubic root of 28066048 is about 303.8974723504.

Adding to 28066048 its sum of digits (34), we get a palindrome (28066082).

Subtracting from 28066048 its product of nonzero digits (18432), we obtain a square (28047616 = 5296²).

The spelling of 28066048 in words is "twenty-eight million, sixty-six thousand, forty-eight".