28575473 has 2 divisors, whose sum is σ = 28575474. Its totient is φ = 28575472.

The previous prime is 28575467. The next prime is 28575509. The reversal of 28575473 is 37457582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18258529 + 10316944 = 4273^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 28575473 - 2⁴ = 28575457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28575473.

It is not a weakly prime, because it can be changed into another prime (28575403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14287736 + 14287737.

It is an arithmetic number, because the mean of its divisors is an integer number (14287737).

Almost surely, 2^28575473 is an apocalyptic number.

It is an amenable number.

28575473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28575473 is an equidigital number, since it uses as much as digits as its factorization.

28575473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 41.

The square root of 28575473 is about 5345.6031465121. The cubic root of 28575473 is about 305.7251330121.

The spelling of 28575473 in words is "twenty-eight million, five hundred seventy-five thousand, four hundred seventy-three".