428488733 has 2 divisors, whose sum is σ = 428488734. Its totient is φ = 428488732.

The previous prime is 428488699. The next prime is 428488747. The reversal of 428488733 is 337884824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427786489 + 702244 = 20683^2 + 838^2 .

It is a cyclic number.

It is not a de Polignac number, because 428488733 - 2²⁰ = 427440157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428488793) 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, 214244366 + 214244367.

It is an arithmetic number, because the mean of its divisors is an integer number (214244367).

Almost surely, 2^428488733 is an apocalyptic number.

It is an amenable number.

428488733 is a deficient number, since it is larger than the sum of its proper divisors (1).

428488733 is an equidigital number, since it uses as much as digits as its factorization.

428488733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1032192, while the sum is 47.

The square root of 428488733 is about 20699.9693961126. The cubic root of 428488733 is about 753.8989450319.

The spelling of 428488733 in words is "four hundred twenty-eight million, four hundred eighty-eight thousand, seven hundred thirty-three".