28435273 has 2 divisors, whose sum is σ = 28435274. Its totient is φ = 28435272.

The previous prime is 28435213. The next prime is 28435279. The reversal of 28435273 is 37253482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22024249 + 6411024 = 4693^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 28435273 - 2¹³ = 28427081 is a prime.

It is not a weakly prime, because it can be changed into another prime (28435279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14217636 + 14217637.

It is an arithmetic number, because the mean of its divisors is an integer number (14217637).

Almost surely, 2^28435273 is an apocalyptic number.

It is an amenable number.

28435273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28435273 is an equidigital number, since it uses as much as digits as its factorization.

28435273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 28435273 is about 5332.4734410965. The cubic root of 28435273 is about 305.2243194361.

The spelling of 28435273 in words is "twenty-eight million, four hundred thirty-five thousand, two hundred seventy-three".