428437585 has 8 divisors (see below), whose sum is σ = 517530816. Its totient is φ = 340479600.

The previous prime is 428437549. The next prime is 428437591. The reversal of 428437585 is 585734824.

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

It is not a de Polignac number, because 428437585 - 2¹⁷ = 428306513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282979 + ... + 284488.

It is an arithmetic number, because the mean of its divisors is an integer number (64691352).

Almost surely, 2^428437585 is an apocalyptic number.

It is an amenable number.

428437585 is a deficient number, since it is larger than the sum of its proper divisors (89093231).

428437585 is a wasteful number, since it uses less digits than its factorization.

428437585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567623.

The product of its digits is 1075200, while the sum is 46.

The square root of 428437585 is about 20698.7338984779. The cubic root of 428437585 is about 753.8689466098.

The spelling of 428437585 in words is "four hundred twenty-eight million, four hundred thirty-seven thousand, five hundred eighty-five".