28533907 has 2 divisors, whose sum is σ = 28533908. Its totient is φ = 28533906.

The previous prime is 28533899. The next prime is 28533913. The reversal of 28533907 is 70933582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28533907 - 2³ = 28533899 is a prime.

It is not a weakly prime, because it can be changed into another prime (28533937) 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, 14266953 + 14266954.

It is an arithmetic number, because the mean of its divisors is an integer number (14266954).

Almost surely, 2^28533907 is an apocalyptic number.

28533907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28533907 is an equidigital number, since it uses as much as digits as its factorization.

28533907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28533907 is about 5341.7138635460. The cubic root of 28533907 is about 305.5768247356.

The spelling of 28533907 in words is "twenty-eight million, five hundred thirty-three thousand, nine hundred seven".