228785633 has 2 divisors, whose sum is σ = 228785634. Its totient is φ = 228785632.

The previous prime is 228785603. The next prime is 228785651. The reversal of 228785633 is 336587822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196897024 + 31888609 = 14032^2 + 5647^2 .

It is a cyclic number.

It is not a de Polignac number, because 228785633 - 2⁶ = 228785569 is a prime.

It is not a weakly prime, because it can be changed into another prime (228785603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114392816 + 114392817.

It is an arithmetic number, because the mean of its divisors is an integer number (114392817).

Almost surely, 2^228785633 is an apocalyptic number.

It is an amenable number.

228785633 is a deficient number, since it is larger than the sum of its proper divisors (1).

228785633 is an equidigital number, since it uses as much as digits as its factorization.

228785633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The square root of 228785633 is about 15125.6614070261. The cubic root of 228785633 is about 611.6123545470.

The spelling of 228785633 in words is "two hundred twenty-eight million, seven hundred eighty-five thousand, six hundred thirty-three".