428863556 has 48 divisors (see below), whose sum is σ = 872871552. Its totient is φ = 182208000.

The previous prime is 428863541. The next prime is 428863601. The reversal of 428863556 is 655368824.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 428863556.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111050 + ... + 114846.

It is an arithmetic number, because the mean of its divisors is an integer number (18184824).

Almost surely, 2^428863556 is an apocalyptic number.

It is an amenable number.

428863556 is an abundant number, since it is smaller than the sum of its proper divisors (444007996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428863556 is a wasteful number, since it uses less digits than its factorization.

428863556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980 (or 3978 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 47.

The square root of 428863556 is about 20709.0211260697. The cubic root of 428863556 is about 754.1187067874.

The spelling of 428863556 in words is "four hundred twenty-eight million, eight hundred sixty-three thousand, five hundred fifty-six".