28280753 has 2 divisors, whose sum is σ = 28280754. Its totient is φ = 28280752.

The previous prime is 28280723. The next prime is 28280761. The reversal of 28280753 is 35708282.

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., 23493409 + 4787344 = 4847^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 28280753 - 2¹⁶ = 28215217 is a prime.

It is a super-3 number, since 3×28280753³ (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28280723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14140376 + 14140377.

It is an arithmetic number, because the mean of its divisors is an integer number (14140377).

Almost surely, 2^28280753 is an apocalyptic number.

It is an amenable number.

28280753 is a deficient number, since it is larger than the sum of its proper divisors (1).

28280753 is an equidigital number, since it uses as much as digits as its factorization.

28280753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 28280753 is about 5317.9651183512. The cubic root of 28280753 is about 304.6704422079.

The spelling of 28280753 in words is "twenty-eight million, two hundred eighty thousand, seven hundred fifty-three".