28473073 has 2 divisors, whose sum is σ = 28473074. Its totient is φ = 28473072.

The previous prime is 28473043. The next prime is 28473083. The reversal of 28473073 is 37037482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28430224 + 42849 = 5332^2 + 207^2 .

It is a cyclic number.

It is not a de Polignac number, because 28473073 - 2¹³ = 28464881 is a prime.

It is not a weakly prime, because it can be changed into another prime (28473043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14236536 + 14236537.

It is an arithmetic number, because the mean of its divisors is an integer number (14236537).

Almost surely, 2^28473073 is an apocalyptic number.

It is an amenable number.

28473073 is a deficient number, since it is larger than the sum of its proper divisors (1).

28473073 is an equidigital number, since it uses as much as digits as its factorization.

28473073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 28473073 is about 5336.0165854315. The cubic root of 28473073 is about 305.3595079941.

The spelling of 28473073 in words is "twenty-eight million, four hundred seventy-three thousand, seventy-three".