28268312 has 8 divisors (see below), whose sum is σ = 53003100. Its totient is φ = 14134152.

The previous prime is 28268309. The next prime is 28268323. The reversal of 28268312 is 21386282.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1766762 + ... + 1766777.

Almost surely, 2^28268312 is an apocalyptic number.

It is an amenable number.

28268312 is a deficient number, since it is larger than the sum of its proper divisors (24734788).

28268312 is a wasteful number, since it uses less digits than its factorization.

28268312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533545 (or 3533541 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 28268312 is about 5316.7952753515. The cubic root of 28268312 is about 304.6257597470.

The spelling of 28268312 in words is "twenty-eight million, two hundred sixty-eight thousand, three hundred twelve".