28672933 has 2 divisors, whose sum is σ = 28672934. Its totient is φ = 28672932.

The previous prime is 28672921. The next prime is 28672939. The reversal of 28672933 is 33927682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21372129 + 7300804 = 4623^2 + 2702^2 .

It is a cyclic number.

It is not a de Polignac number, because 28672933 - 2⁵ = 28672901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28672939) 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, 14336466 + 14336467.

It is an arithmetic number, because the mean of its divisors is an integer number (14336467).

Almost surely, 2^28672933 is an apocalyptic number.

It is an amenable number.

28672933 is a deficient number, since it is larger than the sum of its proper divisors (1).

28672933 is an equidigital number, since it uses as much as digits as its factorization.

28672933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 28672933 is about 5354.7112900697. The cubic root of 28672933 is about 306.0723090826.

The spelling of 28672933 in words is "twenty-eight million, six hundred seventy-two thousand, nine hundred thirty-three".