428858250 has 32 divisors (see below), whose sum is σ = 1070432064. Its totient is φ = 114362000.

The previous prime is 428858249. The next prime is 428858257. The reversal of 428858250 is 52858824.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (428858257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285156 + ... + 286655.

It is an arithmetic number, because the mean of its divisors is an integer number (33451002).

Almost surely, 2^428858250 is an apocalyptic number.

428858250 is an abundant number, since it is smaller than the sum of its proper divisors (641573814).

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

428858250 is a wasteful number, since it uses less digits than its factorization.

428858250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571831 (or 571821 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 42.

The square root of 428858250 is about 20708.8930172523. The cubic root of 428858250 is about 754.1155967303.

The spelling of 428858250 in words is "four hundred twenty-eight million, eight hundred fifty-eight thousand, two hundred fifty".