28133327 has 2 divisors, whose sum is σ = 28133328. Its totient is φ = 28133326.

The previous prime is 28133299. The next prime is 28133333. The reversal of 28133327 is 72333182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28133327 - 2¹⁰ = 28132303 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28133327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28133387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14066663 + 14066664.

It is an arithmetic number, because the mean of its divisors is an integer number (14066664).

Almost surely, 2^28133327 is an apocalyptic number.

28133327 is a deficient number, since it is larger than the sum of its proper divisors (1).

28133327 is an equidigital number, since it uses as much as digits as its factorization.

28133327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 28133327 is about 5304.0858778870. The cubic root of 28133327 is about 304.1401095556.

The spelling of 28133327 in words is "twenty-eight million, one hundred thirty-three thousand, three hundred twenty-seven".