428836911 has 4 divisors (see below), whose sum is σ = 571782552. Its totient is φ = 285891272.

The previous prime is 428836907. The next prime is 428836913. The reversal of 428836911 is 119638824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428836911 - 2² = 428836907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428836913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71472816 + ... + 71472821.

It is an arithmetic number, because the mean of its divisors is an integer number (142945638).

Almost surely, 2^428836911 is an apocalyptic number.

428836911 is a deficient number, since it is larger than the sum of its proper divisors (142945641).

428836911 is a wasteful number, since it uses less digits than its factorization.

428836911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142945640.

The product of its digits is 82944, while the sum is 42.

The square root of 428836911 is about 20708.3777974036. The cubic root of 428836911 is about 754.1030888371.

It can be divided in two parts, 42883 and 6911, that added together give a palindrome (49794).

The spelling of 428836911 in words is "four hundred twenty-eight million, eight hundred thirty-six thousand, nine hundred eleven".