28648253 has 2 divisors, whose sum is σ = 28648254. Its totient is φ = 28648252.

The previous prime is 28648237. The next prime is 28648267. The reversal of 28648253 is 35284682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18292729 + 10355524 = 4277^2 + 3218^2 .

It is a cyclic number.

It is not a de Polignac number, because 28648253 - 2⁴ = 28648237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28648273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14324126 + 14324127.

It is an arithmetic number, because the mean of its divisors is an integer number (14324127).

Almost surely, 2^28648253 is an apocalyptic number.

It is an amenable number.

28648253 is a deficient number, since it is larger than the sum of its proper divisors (1).

28648253 is an equidigital number, since it uses as much as digits as its factorization.

28648253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 38.

The square root of 28648253 is about 5352.4062812907. The cubic root of 28648253 is about 305.9844674361.

The spelling of 28648253 in words is "twenty-eight million, six hundred forty-eight thousand, two hundred fifty-three".