428571428 has 12 divisors (see below), whose sum is σ = 794117772. Its totient is φ = 201680640.

The previous prime is 428571389. The next prime is 428571431. The reversal of 428571428 is 824175824.

It can be written as a sum of positive squares in 2 ways, for example, as 296597284 + 131974144 = 17222^2 + 11488^2 .

428571428 is a modest number, since divided by 571428 gives 428 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3151193 + ... + 3151328.

It is an arithmetic number, because the mean of its divisors is an integer number (66176481).

Almost surely, 2^428571428 is an apocalyptic number.

It is an amenable number.

428571428 is a deficient number, since it is larger than the sum of its proper divisors (365546344).

428571428 is a wasteful number, since it uses less digits than its factorization.

428571428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302542 (or 6302540 counting only the distinct ones).

The product of its digits is 143360, while the sum is 41.

The square root of 428571428 is about 20701.9667664693. The cubic root of 428571428 is about 753.9474407941.

The spelling of 428571428 in words is "four hundred twenty-eight million, five hundred seventy-one thousand, four hundred twenty-eight".