228132293 has 2 divisors, whose sum is σ = 228132294. Its totient is φ = 228132292.

The previous prime is 228132283. The next prime is 228132349. The reversal of 228132293 is 392231822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228100609 + 31684 = 15103^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 228132293 - 2¹⁶ = 228066757 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_12545465 and since 228132293 and 12545465 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228132283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114066146 + 114066147.

It is an arithmetic number, because the mean of its divisors is an integer number (114066147).

Almost surely, 2^228132293 is an apocalyptic number.

It is an amenable number.

228132293 is a deficient number, since it is larger than the sum of its proper divisors (1).

228132293 is an equidigital number, since it uses as much as digits as its factorization.

228132293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 228132293 is about 15104.0488942535. The cubic root of 228132293 is about 611.0296084719.

The spelling of 228132293 in words is "two hundred twenty-eight million, one hundred thirty-two thousand, two hundred ninety-three".