28303112 has 16 divisors (see below), whose sum is σ = 53149500. Its totient is φ = 14129920.

The previous prime is 28303109. The next prime is 28303117. The reversal of 28303112 is 21130382.

It can be written as a sum of positive squares in 2 ways, for example, as 28238596 + 64516 = 5314^2 + 254^2 .

It is a super-2 number, since 2×28303112² = 1602132297769088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28303117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3764 + ... + 8412.

Almost surely, 2^28303112 is an apocalyptic number.

It is an amenable number.

28303112 is a deficient number, since it is larger than the sum of its proper divisors (24846388).

28303112 is a wasteful number, since it uses less digits than its factorization.

28303112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5416 (or 5412 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 28303112 is about 5320.0669168724. The cubic root of 28303112 is about 304.7507127245.

Adding to 28303112 its reverse (21130382), we get a palindrome (49433494).

The spelling of 28303112 in words is "twenty-eight million, three hundred three thousand, one hundred twelve".