28312302 has 16 divisors (see below), whose sum is σ = 56730960. Its totient is φ = 9419712.

The previous prime is 28312267. The next prime is 28312309. The reversal of 28312302 is 20321382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28312309) 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, 733 + ... + 7560.

It is an arithmetic number, because the mean of its divisors is an integer number (3545685).

Almost surely, 2^28312302 is an apocalyptic number.

28312302 is an abundant number, since it is smaller than the sum of its proper divisors (28418658).

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

28312302 is a wasteful number, since it uses less digits than its factorization.

28312302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8867.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 28312302 is about 5320.9305577126. The cubic root of 28312302 is about 304.7836932672.

Adding to 28312302 its reverse (20321382), we get a palindrome (48633684).

The spelling of 28312302 in words is "twenty-eight million, three hundred twelve thousand, three hundred two".