428562856 has 16 divisors (see below), whose sum is σ = 805626900. Its totient is φ = 213729024.

The previous prime is 428562851. The next prime is 428562859. The reversal of 428562856 is 658265824.

It can be written as a sum of positive squares in 2 ways, for example, as 381420900 + 47141956 = 19530^2 + 6866^2 .

It is a super-2 number, since 2×428562856² = 367332243085753472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428562851) 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, 65745 + ... + 71968.

Almost surely, 2^428562856 is an apocalyptic number.

It is an amenable number.

428562856 is a deficient number, since it is larger than the sum of its proper divisors (377064044).

428562856 is a wasteful number, since it uses less digits than its factorization.

428562856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138108 (or 138104 counting only the distinct ones).

The product of its digits is 921600, while the sum is 46.

The square root of 428562856 is about 20701.7597319648. The cubic root of 428562856 is about 753.9424141092.

The spelling of 428562856 in words is "four hundred twenty-eight million, five hundred sixty-two thousand, eight hundred fifty-six".