28055473 has 2 divisors, whose sum is σ = 28055474. Its totient is φ = 28055472.

The previous prime is 28055459. The next prime is 28055483. The reversal of 28055473 is 37455082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27583504 + 471969 = 5252^2 + 687^2 .

It is a cyclic number.

It is not a de Polignac number, because 28055473 - 2¹⁷ = 27924401 is a prime.

It is not a weakly prime, because it can be changed into another prime (28055413) 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, 14027736 + 14027737.

It is an arithmetic number, because the mean of its divisors is an integer number (14027737).

Almost surely, 2^28055473 is an apocalyptic number.

It is an amenable number.

28055473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28055473 is an equidigital number, since it uses as much as digits as its factorization.

28055473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 28055473 is about 5296.7417343118. The cubic root of 28055473 is about 303.8592990685.

The spelling of 28055473 in words is "twenty-eight million, fifty-five thousand, four hundred seventy-three".