428269511 has 2 divisors, whose sum is σ = 428269512. Its totient is φ = 428269510.

The previous prime is 428269483. The next prime is 428269547. The reversal of 428269511 is 115962824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428269511 - 2⁶ = 428269447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428269111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214134755 + 214134756.

It is an arithmetic number, because the mean of its divisors is an integer number (214134756).

Almost surely, 2^428269511 is an apocalyptic number.

428269511 is a deficient number, since it is larger than the sum of its proper divisors (1).

428269511 is an equidigital number, since it uses as much as digits as its factorization.

428269511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 428269511 is about 20694.6734934379. The cubic root of 428269511 is about 753.7703539979.

The spelling of 428269511 in words is "four hundred twenty-eight million, two hundred sixty-nine thousand, five hundred eleven".