28102253 has 2 divisors, whose sum is σ = 28102254. Its totient is φ = 28102252.

The previous prime is 28102229. The next prime is 28102267. The reversal of 28102253 is 35220182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 4937284 = 4813^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 28102253 - 2²⁴ = 11325037 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (28102453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14051126 + 14051127.

It is an arithmetic number, because the mean of its divisors is an integer number (14051127).

Almost surely, 2^28102253 is an apocalyptic number.

It is an amenable number.

28102253 is a deficient number, since it is larger than the sum of its proper divisors (1).

28102253 is an equidigital number, since it uses as much as digits as its factorization.

28102253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 28102253 is about 5301.1558173666. The cubic root of 28102253 is about 304.0280913850.

The spelling of 28102253 in words is "twenty-eight million, one hundred two thousand, two hundred fifty-three".