28477733 has 2 divisors, whose sum is σ = 28477734. Its totient is φ = 28477732.

The previous prime is 28477717. The next prime is 28477763. The reversal of 28477733 is 33777482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25230529 + 3247204 = 5023^2 + 1802^2 .

It is a cyclic number.

It is not a de Polignac number, because 28477733 - 2⁴ = 28477717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28477763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14238866 + 14238867.

It is an arithmetic number, because the mean of its divisors is an integer number (14238867).

Almost surely, 2^28477733 is an apocalyptic number.

It is an amenable number.

28477733 is a deficient number, since it is larger than the sum of its proper divisors (1).

28477733 is an equidigital number, since it uses as much as digits as its factorization.

28477733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 41.

The square root of 28477733 is about 5336.4532228813. The cubic root of 28477733 is about 305.3761658107.

The spelling of 28477733 in words is "twenty-eight million, four hundred seventy-seven thousand, seven hundred thirty-three".