28831193 has 2 divisors, whose sum is σ = 28831194. Its totient is φ = 28831192.

The previous prime is 28831169. The next prime is 28831207. The reversal of 28831193 is 39113882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27583504 + 1247689 = 5252^2 + 1117^2 .

It is a cyclic number.

It is not a de Polignac number, because 28831193 - 2¹⁰ = 28830169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28831123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14415596 + 14415597.

It is an arithmetic number, because the mean of its divisors is an integer number (14415597).

Almost surely, 2^28831193 is an apocalyptic number.

It is an amenable number.

28831193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28831193 is an equidigital number, since it uses as much as digits as its factorization.

28831193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 28831193 is about 5369.4685956806. The cubic root of 28831193 is about 306.6343973344.

The spelling of 28831193 in words is "twenty-eight million, eight hundred thirty-one thousand, one hundred ninety-three".