28777033 has 2 divisors, whose sum is σ = 28777034. Its totient is φ = 28777032.

The previous prime is 28777027. The next prime is 28777037. The reversal of 28777033 is 33077782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28590409 + 186624 = 5347^2 + 432^2 .

It is a cyclic number.

It is not a de Polignac number, because 28777033 - 2⁹ = 28776521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28776983 and 28777001.

It is not a weakly prime, because it can be changed into another prime (28777037) 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, 14388516 + 14388517.

It is an arithmetic number, because the mean of its divisors is an integer number (14388517).

Almost surely, 2^28777033 is an apocalyptic number.

It is an amenable number.

28777033 is a deficient number, since it is larger than the sum of its proper divisors (1).

28777033 is an equidigital number, since it uses as much as digits as its factorization.

28777033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 28777033 is about 5364.4228953355. The cubic root of 28777033 is about 306.4422705999.

The spelling of 28777033 in words is "twenty-eight million, seven hundred seventy-seven thousand, thirty-three".