428911 has 8 divisors (see below), whose sum is σ = 497664. Its totient is φ = 362040.

The previous prime is 428899. The next prime is 428951. The reversal of 428911 is 119824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428911 - 2¹¹ = 426863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 928.

It is an arithmetic number, because the mean of its divisors is an integer number (62208).

2⁴²⁸⁹¹¹ is an apocalyptic number.

428911 is a deficient number, since it is larger than the sum of its proper divisors (68753).

428911 is an equidigital number, since it uses as much as digits as its factorization.

428911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941.

The product of its digits is 576, while the sum is 25.

The square root of 428911 is about 654.9129713176. The cubic root of 428911 is about 75.4146514457.

The spelling of 428911 in words is "four hundred twenty-eight thousand, nine hundred eleven".