28325248 has 64 divisors (see below), whose sum is σ = 65337120. Its totient is φ = 11980800.

The previous prime is 28325243. The next prime is 28325249. The reversal of 28325248 is 84252382.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28325243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90340 + ... + 90652.

Almost surely, 2^28325248 is an apocalyptic number.

28325248 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 28325248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32668560).

28325248 is an abundant number, since it is smaller than the sum of its proper divisors (37011872).

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

28325248 is a wasteful number, since it uses less digits than its factorization.

28325248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 423 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 28325248 is about 5322.1469352133. The cubic root of 28325248 is about 304.8301410203.

The spelling of 28325248 in words is "twenty-eight million, three hundred twenty-five thousand, two hundred forty-eight".