28322412 has 12 divisors (see below), whose sum is σ = 66085656. Its totient is φ = 9440800.

The previous prime is 28322389. The next prime is 28322429. The reversal of 28322412 is 21422382.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1180089 + ... + 1180112.

It is an arithmetic number, because the mean of its divisors is an integer number (5507138).

Almost surely, 2^28322412 is an apocalyptic number.

It is an amenable number.

28322412 is an abundant number, since it is smaller than the sum of its proper divisors (37763244).

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

28322412 is a wasteful number, since it uses less digits than its factorization.

28322412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360208 (or 2360206 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 28322412 is about 5321.8804947124. The cubic root of 28322412 is about 304.8199672096.

Adding to 28322412 its reverse (21422382), we get a palindrome (49744794).

The spelling of 28322412 in words is "twenty-eight million, three hundred twenty-two thousand, four hundred twelve".