28579273 has 2 divisors, whose sum is σ = 28579274. Its totient is φ = 28579272.

The previous prime is 28579231. The next prime is 28579289. The reversal of 28579273 is 37297582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28440889 + 138384 = 5333^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 28579273 - 2⁹ = 28578761 is a prime.

It is not a weakly prime, because it can be changed into another prime (28579223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14289636 + 14289637.

It is an arithmetic number, because the mean of its divisors is an integer number (14289637).

Almost surely, 2^28579273 is an apocalyptic number.

It is an amenable number.

28579273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28579273 is an equidigital number, since it uses as much as digits as its factorization.

28579273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 28579273 is about 5345.9585669925. The cubic root of 28579273 is about 305.7386843073.

The spelling of 28579273 in words is "twenty-eight million, five hundred seventy-nine thousand, two hundred seventy-three".