228035861 has 2 divisors, whose sum is σ = 228035862. Its totient is φ = 228035860.

The previous prime is 228035851. The next prime is 228035897. The reversal of 228035861 is 168530822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227828836 + 207025 = 15094^2 + 455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228035861 is a prime.

It is a super-2 number, since 2×228035861² = 104000707804022642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228035851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114017930 + 114017931.

It is an arithmetic number, because the mean of its divisors is an integer number (114017931).

Almost surely, 2^228035861 is an apocalyptic number.

It is an amenable number.

228035861 is a deficient number, since it is larger than the sum of its proper divisors (1).

228035861 is an equidigital number, since it uses as much as digits as its factorization.

228035861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 228035861 is about 15100.8563002235. The cubic root of 228035861 is about 610.9435018382.

The spelling of 228035861 in words is "two hundred twenty-eight million, thirty-five thousand, eight hundred sixty-one".