28755333 has 6 divisors (see below), whose sum is σ = 41535494. Its totient is φ = 19170216.

The previous prime is 28755329. The next prime is 28755373. The reversal of 28755333 is 33355782.

It can be written as a sum of positive squares in only one way, i.e., 28323684 + 431649 = 5322^2 + 657^2 .

It is not a de Polignac number, because 28755333 - 2² = 28755329 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28755323) 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 in 5 ways as a sum of consecutive naturals, for example, 1597510 + ... + 1597527.

Almost surely, 2^28755333 is an apocalyptic number.

It is an amenable number.

28755333 is a deficient number, since it is larger than the sum of its proper divisors (12780161).

28755333 is a wasteful number, since it uses less digits than its factorization.

28755333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195043 (or 3195040 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 28755333 is about 5362.3999291362. The cubic root of 28755333 is about 306.3652245582.

The spelling of 28755333 in words is "twenty-eight million, seven hundred fifty-five thousand, three hundred thirty-three".