28769273 has 8 divisors (see below), whose sum is σ = 31067400. Its totient is φ = 26483328.

The previous prime is 28769267. The next prime is 28769291. The reversal of 28769273 is 37296782.

It can be written as a sum of positive squares in 4 ways, for example, as 3286969 + 25482304 = 1813^2 + 5048^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28769273 - 2¹⁰ = 28768249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28769203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2213 + ... + 7901.

It is an arithmetic number, because the mean of its divisors is an integer number (3883425).

Almost surely, 2^28769273 is an apocalyptic number.

It is an amenable number.

28769273 is a deficient number, since it is larger than the sum of its proper divisors (2298127).

28769273 is a wasteful number, since it uses less digits than its factorization.

28769273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091.

The product of its digits is 254016, while the sum is 44.

The square root of 28769273 is about 5363.6995628018. The cubic root of 28769273 is about 306.4147231016.

The spelling of 28769273 in words is "twenty-eight million, seven hundred sixty-nine thousand, two hundred seventy-three".