28322612 has 24 divisors (see below), whose sum is σ = 53903304. Its totient is φ = 12966912.

The previous prime is 28322611. The next prime is 28322621. The reversal of 28322612 is 21622382.

It can be written as a sum of positive squares in 4 ways, for example, as 19044496 + 9278116 = 4364^2 + 3046^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28322611) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3113 + ... + 8144.

It is an arithmetic number, because the mean of its divisors is an integer number (2245971).

Almost surely, 2^28322612 is an apocalyptic number.

It is an amenable number.

28322612 is a deficient number, since it is larger than the sum of its proper divisors (25580692).

28322612 is a wasteful number, since it uses less digits than its factorization.

28322612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11315 (or 11313 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 28322612 is about 5321.8992850297. The cubic root of 28322612 is about 304.8206847080.

Adding to 28322612 its reverse (21622382), we get a palindrome (49944994).

The spelling of 28322612 in words is "twenty-eight million, three hundred twenty-two thousand, six hundred twelve".