228485783 has 2 divisors, whose sum is σ = 228485784. Its totient is φ = 228485782.

The previous prime is 228485737. The next prime is 228485843. The reversal of 228485783 is 387584822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228485783 - 2¹⁴ = 228469399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228485183) 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, 114242891 + 114242892.

It is an arithmetic number, because the mean of its divisors is an integer number (114242892).

Almost surely, 2^228485783 is an apocalyptic number.

228485783 is a deficient number, since it is larger than the sum of its proper divisors (1).

228485783 is an equidigital number, since it uses as much as digits as its factorization.

228485783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 47.

The square root of 228485783 is about 15115.7461939528. The cubic root of 228485783 is about 611.3450415180.

The spelling of 228485783 in words is "two hundred twenty-eight million, four hundred eighty-five thousand, seven hundred eighty-three".