28812303 has 36 divisors (see below), whose sum is σ = 47484840. Its totient is φ = 16780608.

The previous prime is 28812247. The next prime is 28812323. The reversal of 28812303 is 30321882.

It is not a de Polignac number, because 28812303 - 2¹⁴ = 28795919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28812323) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28401 + ... + 29397.

Almost surely, 2^28812303 is an apocalyptic number.

28812303 is a deficient number, since it is larger than the sum of its proper divisors (18672537).

28812303 is a wasteful number, since it uses less digits than its factorization.

28812303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28812303 is about 5367.7092879552. The cubic root of 28812303 is about 306.5674144517.

It can be divided in two parts, 2881 and 2303, that added together give a square (5184 = 72²).

The spelling of 28812303 in words is "twenty-eight million, eight hundred twelve thousand, three hundred three".