28032673 has 2 divisors, whose sum is σ = 28032674. Its totient is φ = 28032672.

The previous prime is 28032629. The next prime is 28032679. The reversal of 28032673 is 37623082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22353984 + 5678689 = 4728^2 + 2383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28032673 is a prime.

It is not a weakly prime, because it can be changed into another prime (28032679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14016336 + 14016337.

It is an arithmetic number, because the mean of its divisors is an integer number (14016337).

Almost surely, 2^28032673 is an apocalyptic number.

It is an amenable number.

28032673 is a deficient number, since it is larger than the sum of its proper divisors (1).

28032673 is an equidigital number, since it uses as much as digits as its factorization.

28032673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 28032673 is about 5294.5890303214. The cubic root of 28032673 is about 303.7769637418.

It can be divided in two parts, 2803 and 2673, that added together give a square (5476 = 74²).

The spelling of 28032673 in words is "twenty-eight million, thirty-two thousand, six hundred seventy-three".