28066248 has 96 divisors (see below), whose sum is σ = 87609600. Its totient is φ = 7951104.

The previous prime is 28066243. The next prime is 28066267. The reversal of 28066248 is 84266082.

28066248 is a `hidden beast` number, since 28 + 0 + 6 + 624 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28066243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117313 + ... + 117551.

It is an arithmetic number, because the mean of its divisors is an integer number (912600).

Almost surely, 2^28066248 is an apocalyptic number.

28066248 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 28066248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43804800).

28066248 is an abundant number, since it is smaller than the sum of its proper divisors (59543352).

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

28066248 is a wasteful number, since it uses less digits than its factorization.

28066248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 28066248 is about 5297.7587714051. The cubic root of 28066248 is about 303.8981942113.

The spelling of 28066248 in words is "twenty-eight million, sixty-six thousand, two hundred forty-eight".