28535933 has 2 divisors, whose sum is σ = 28535934. Its totient is φ = 28535932.

The previous prime is 28535863. The next prime is 28535977. The reversal of 28535933 is 33953582.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 1214404 = 5227^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 28535933 - 2¹² = 28531837 is a prime.

It is a super-3 number, since 3×28535933³ (a number of 23 digits) contains 333 as substring.

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 (28535993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14267966 + 14267967.

It is an arithmetic number, because the mean of its divisors is an integer number (14267967).

Almost surely, 2^28535933 is an apocalyptic number.

It is an amenable number.

28535933 is a deficient number, since it is larger than the sum of its proper divisors (1).

28535933 is an equidigital number, since it uses as much as digits as its factorization.

28535933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 38.

The square root of 28535933 is about 5341.9034996900. The cubic root of 28535933 is about 305.5840568798.

The spelling of 28535933 in words is "twenty-eight million, five hundred thirty-five thousand, nine hundred thirty-three".