428688011 has 2 divisors, whose sum is σ = 428688012. Its totient is φ = 428688010.

The previous prime is 428687993. The next prime is 428688023. The reversal of 428688011 is 110886824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428688011 is a prime.

It is a super-2 number, since 2×428688011² = 367546821550272242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (428688061) 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, 214344005 + 214344006.

It is an arithmetic number, because the mean of its divisors is an integer number (214344006).

Almost surely, 2^428688011 is an apocalyptic number.

428688011 is a deficient number, since it is larger than the sum of its proper divisors (1).

428688011 is an equidigital number, since it uses as much as digits as its factorization.

428688011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 428688011 is about 20704.7823219661. The cubic root of 428688011 is about 754.0157992829.

The spelling of 428688011 in words is "four hundred twenty-eight million, six hundred eighty-eight thousand, eleven".