28173833 has 2 divisors, whose sum is σ = 28173834. Its totient is φ = 28173832.

The previous prime is 28173829. The next prime is 28173841. The reversal of 28173833 is 33837182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26543104 + 1630729 = 5152^2 + 1277^2 .

It is a cyclic number.

It is not a de Polignac number, because 28173833 - 2² = 28173829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28173793 and 28173802.

It is not a weakly prime, because it can be changed into another prime (28173883) 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, 14086916 + 14086917.

It is an arithmetic number, because the mean of its divisors is an integer number (14086917).

Almost surely, 2^28173833 is an apocalyptic number.

It is an amenable number.

28173833 is a deficient number, since it is larger than the sum of its proper divisors (1).

28173833 is an equidigital number, since it uses as much as digits as its factorization.

28173833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 28173833 is about 5307.9028815531. The cubic root of 28173833 is about 304.2860052225.

The spelling of 28173833 in words is "twenty-eight million, one hundred seventy-three thousand, eight hundred thirty-three".