28105853 has 2 divisors, whose sum is σ = 28105854. Its totient is φ = 28105852.

The previous prime is 28105837. The next prime is 28105867. The reversal of 28105853 is 35850182.

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., 24334489 + 3771364 = 4933^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 28105853 - 2⁴ = 28105837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28105813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14052926 + 14052927.

It is an arithmetic number, because the mean of its divisors is an integer number (14052927).

Almost surely, 2^28105853 is an apocalyptic number.

It is an amenable number.

28105853 is a deficient number, since it is larger than the sum of its proper divisors (1).

28105853 is an equidigital number, since it uses as much as digits as its factorization.

28105853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 28105853 is about 5301.4953550861. The cubic root of 28105853 is about 304.0410731958.

The spelling of 28105853 in words is "twenty-eight million, one hundred five thousand, eight hundred fifty-three".