28616473 has 2 divisors, whose sum is σ = 28616474. Its totient is φ = 28616472.

The previous prime is 28616447. The next prime is 28616477. The reversal of 28616473 is 37461682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14538969 + 14077504 = 3813^2 + 3752^2 .

It is a cyclic number.

It is not a de Polignac number, because 28616473 - 2²¹ = 26519321 is a prime.

It is equal to p_1777384 and since 28616473 and 1777384 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28616477) 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, 14308236 + 14308237.

It is an arithmetic number, because the mean of its divisors is an integer number (14308237).

Almost surely, 2^28616473 is an apocalyptic number.

It is an amenable number.

28616473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28616473 is an equidigital number, since it uses as much as digits as its factorization.

28616473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 28616473 is about 5349.4366993170. The cubic root of 28616473 is about 305.8712809609.

The spelling of 28616473 in words is "twenty-eight million, six hundred sixteen thousand, four hundred seventy-three".