28233113 has 2 divisors, whose sum is σ = 28233114. Its totient is φ = 28233112.

The previous prime is 28233103. The next prime is 28233119. The reversal of 28233113 is 31133282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23687689 + 4545424 = 4867^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 28233113 - 2¹⁶ = 28167577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28233119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116556 + 14116557.

It is an arithmetic number, because the mean of its divisors is an integer number (14116557).

Almost surely, 2^28233113 is an apocalyptic number.

It is an amenable number.

28233113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28233113 is an equidigital number, since it uses as much as digits as its factorization.

28233113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 28233113 is about 5313.4840735623. The cubic root of 28233113 is about 304.4992697550.

Adding to 28233113 its reverse (31133282), we get a palindrome (59366395).

The spelling of 28233113 in words is "twenty-eight million, two hundred thirty-three thousand, one hundred thirteen".