428246033 has 2 divisors, whose sum is σ = 428246034. Its totient is φ = 428246032.

The previous prime is 428246009. The next prime is 428246041. The reversal of 428246033 is 330642824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354079489 + 74166544 = 18817^2 + 8612^2 .

It is a cyclic number.

It is not a de Polignac number, because 428246033 - 2⁶ = 428245969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (428246083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214123016 + 214123017.

It is an arithmetic number, because the mean of its divisors is an integer number (214123017).

Almost surely, 2^428246033 is an apocalyptic number.

It is an amenable number.

428246033 is a deficient number, since it is larger than the sum of its proper divisors (1).

428246033 is an equidigital number, since it uses as much as digits as its factorization.

428246033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 428246033 is about 20694.1062382505. The cubic root of 428246033 is about 753.7565796935.

Adding to 428246033 its reverse (330642824), we get a palindrome (758888857).

The spelling of 428246033 in words is "four hundred twenty-eight million, two hundred forty-six thousand, thirty-three".