28735633 has 2 divisors, whose sum is σ = 28735634. Its totient is φ = 28735632.

The previous prime is 28735621. The next prime is 28735639. The reversal of 28735633 is 33653782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19298449 + 9437184 = 4393^2 + 3072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28735633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28735592 and 28735601.

It is not a weakly prime, because it can be changed into another prime (28735639) 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, 14367816 + 14367817.

It is an arithmetic number, because the mean of its divisors is an integer number (14367817).

Almost surely, 2^28735633 is an apocalyptic number.

It is an amenable number.

28735633 is a deficient number, since it is larger than the sum of its proper divisors (1).

28735633 is an equidigital number, since it uses as much as digits as its factorization.

28735633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

The square root of 28735633 is about 5360.5627503090. The cubic root of 28735633 is about 306.2952459597.

The spelling of 28735633 in words is "twenty-eight million, seven hundred thirty-five thousand, six hundred thirty-three".