28968273 has 28 divisors (see below), whose sum is σ = 44069760. Its totient is φ = 19029816.

The previous prime is 28968257. The next prime is 28968287. The reversal of 28968273 is 37286982.

It is not a de Polignac number, because 28968273 - 2⁴ = 28968257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28968223) 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 27 ways as a sum of consecutive naturals, for example, 57340 + ... + 57842.

It is an arithmetic number, because the mean of its divisors is an integer number (1573920).

Almost surely, 2^28968273 is an apocalyptic number.

It is an amenable number.

28968273 is a deficient number, since it is larger than the sum of its proper divisors (15101487).

28968273 is an frugal number, since it uses more digits than its factorization.

28968273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 585 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28968273 is about 5382.2182230006. The cubic root of 28968273 is about 307.1196010000.

It can be divided in two parts, 28968 and 273, that added together give a square (29241 = 171²).

The spelling of 28968273 in words is "twenty-eight million, nine hundred sixty-eight thousand, two hundred seventy-three".