428936511 has 4 divisors (see below), whose sum is σ = 571915352. Its totient is φ = 285957672.

The previous prime is 428936507. The next prime is 428936513. The reversal of 428936511 is 115639824.

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

It is not a de Polignac number, because 428936511 - 2² = 428936507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428936511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428936513) 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, 71489416 + ... + 71489421.

It is an arithmetic number, because the mean of its divisors is an integer number (142978838).

Almost surely, 2^428936511 is an apocalyptic number.

428936511 is a deficient number, since it is larger than the sum of its proper divisors (142978841).

428936511 is a wasteful number, since it uses less digits than its factorization.

428936511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142978840.

The product of its digits is 51840, while the sum is 39.

The square root of 428936511 is about 20710.7824815964. The cubic root of 428936511 is about 754.1614660054.

The spelling of 428936511 in words is "four hundred twenty-eight million, nine hundred thirty-six thousand, five hundred eleven".