428905911 has 16 divisors (see below), whose sum is σ = 676108800. Its totient is φ = 236637408.

The previous prime is 428905907. The next prime is 428905913. The reversal of 428905911 is 119509824.

It is not a de Polignac number, because 428905911 - 2² = 428905907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428905911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428905913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351531 + ... + 352748.

It is an arithmetic number, because the mean of its divisors is an integer number (42256800).

Almost surely, 2^428905911 is an apocalyptic number.

428905911 is a deficient number, since it is larger than the sum of its proper divisors (247202889).

428905911 is a wasteful number, since it uses less digits than its factorization.

428905911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704318.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 428905911 is about 20710.0437227931. The cubic root of 428905911 is about 754.1435318131.

The spelling of 428905911 in words is "four hundred twenty-eight million, nine hundred five thousand, nine hundred eleven".