428910256 has 40 divisors (see below), whose sum is σ = 912798720. Its totient is φ = 194331456.

The previous prime is 428910247. The next prime is 428910257. The reversal of 428910256 is 652019824.

It is not an unprimeable number, because it can be changed into a prime (428910257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23680 + ... + 37663.

It is an arithmetic number, because the mean of its divisors is an integer number (22819968).

Almost surely, 2^428910256 is an apocalyptic number.

428910256 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

428910256 is an abundant number, since it is smaller than the sum of its proper divisors (483888464).

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

428910256 is a wasteful number, since it uses less digits than its factorization.

428910256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61393 (or 61387 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 428910256 is about 20710.1486233199. The cubic root of 428910256 is about 754.1460784031.

The spelling of 428910256 in words is "four hundred twenty-eight million, nine hundred ten thousand, two hundred fifty-six".