28804033 has 2 divisors, whose sum is σ = 28804034. Its totient is φ = 28804032.

The previous prime is 28804031. The next prime is 28804043. The reversal of 28804033 is 33040882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20178064 + 8625969 = 4492^2 + 2937^2 .

It is a cyclic number.

It is not a de Polignac number, because 28804033 - 2¹ = 28804031 is a prime.

Together with 28804031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28803992 and 28804010.

It is not a weakly prime, because it can be changed into another prime (28804031) 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, 14402016 + 14402017.

It is an arithmetic number, because the mean of its divisors is an integer number (14402017).

Almost surely, 2^28804033 is an apocalyptic number.

It is an amenable number.

28804033 is a deficient number, since it is larger than the sum of its proper divisors (1).

28804033 is an equidigital number, since it uses as much as digits as its factorization.

28804033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28804033 is about 5366.9388854355. The cubic root of 28804033 is about 306.5380802801.

The spelling of 28804033 in words is "twenty-eight million, eight hundred four thousand, thirty-three".