428577 has 8 divisors (see below), whose sum is σ = 574464. Its totient is φ = 284208.

The previous prime is 428569. The next prime is 428579. The reversal of 428577 is 775824.

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

It is not a de Polignac number, because 428577 - 2³ = 428569 is a prime.

428577 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (71808).

2⁴²⁸⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

428577 is a deficient number, since it is larger than the sum of its proper divisors (145887).

428577 is a wasteful number, since it uses less digits than its factorization.

428577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759.

The product of its digits is 15680, while the sum is 33.

The square root of 428577 is about 654.6579259430. The cubic root of 428577 is about 75.3950708221.

The spelling of 428577 in words is "four hundred twenty-eight thousand, five hundred seventy-seven".