28326312 has 192 divisors, whose sum is σ = 94848000. Its totient is φ = 7620480.

The previous prime is 28326299. The next prime is 28326329. The reversal of 28326312 is 21362382.

28326312 is a `hidden beast` number, since 28 + 3 + 2 + 631 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 765558 + ... + 765594.

It is an arithmetic number, because the mean of its divisors is an integer number (494000).

Almost surely, 2^28326312 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 28326312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47424000).

28326312 is an abundant number, since it is smaller than the sum of its proper divisors (66521688).

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

28326312 is a wasteful number, since it uses less digits than its factorization.

28326312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 80 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 28326312 is about 5322.2468939349. The cubic root of 28326312 is about 304.8339578179.

Adding to 28326312 its reverse (21362382), we get a palindrome (49688694).

The spelling of 28326312 in words is "twenty-eight million, three hundred twenty-six thousand, three hundred twelve".