28318248 has 96 divisors (see below), whose sum is σ = 90941760. Its totient is φ = 8087040.

The previous prime is 28318237. The next prime is 28318253. The reversal of 28318248 is 84281382.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12568 + ... + 14648.

It is an arithmetic number, because the mean of its divisors is an integer number (947310).

Almost surely, 2^28318248 is an apocalyptic number.

28318248 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 28318248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45470880).

28318248 is an abundant number, since it is smaller than the sum of its proper divisors (62623512).

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

28318248 is a wasteful number, since it uses less digits than its factorization.

28318248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109 (or 2093 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 28318248 is about 5321.4892652339. The cubic root of 28318248 is about 304.8050281271.

The spelling of 28318248 in words is "twenty-eight million, three hundred eighteen thousand, two hundred forty-eight".