28098193 has 2 divisors, whose sum is σ = 28098194. Its totient is φ = 28098192.

The previous prime is 28098173. The next prime is 28098197. The reversal of 28098193 is 39189082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 2169729 = 5092^2 + 1473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28098193 is a prime.

It is a super-3 number, since 3×28098193³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28098197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14049096 + 14049097.

It is an arithmetic number, because the mean of its divisors is an integer number (14049097).

Almost surely, 2^28098193 is an apocalyptic number.

It is an amenable number.

28098193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28098193 is an equidigital number, since it uses as much as digits as its factorization.

28098193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 28098193 is about 5300.7728681769. The cubic root of 28098193 is about 304.0134494569.

The spelling of 28098193 in words is "twenty-eight million, ninety-eight thousand, one hundred ninety-three".