228428833 has 2 divisors, whose sum is σ = 228428834. Its totient is φ = 228428832.

The previous prime is 228428807. The next prime is 228428869. The reversal of 228428833 is 338824822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198584464 + 29844369 = 14092^2 + 5463^2 .

It is a cyclic number.

It is not a de Polignac number, because 228428833 - 2²¹ = 226331681 is a prime.

It is not a weakly prime, because it can be changed into another prime (228428633) 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, 114214416 + 114214417.

It is an arithmetic number, because the mean of its divisors is an integer number (114214417).

Almost surely, 2^228428833 is an apocalyptic number.

It is an amenable number.

228428833 is a deficient number, since it is larger than the sum of its proper divisors (1).

228428833 is an equidigital number, since it uses as much as digits as its factorization.

228428833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 40.

The square root of 228428833 is about 15113.8622793778. The cubic root of 228428833 is about 611.2942447861.

The spelling of 228428833 in words is "two hundred twenty-eight million, four hundred twenty-eight thousand, eight hundred thirty-three".