428255430 has 32 divisors (see below), whose sum is σ = 1035915264. Its totient is φ = 113301216.

The previous prime is 428255417. The next prime is 428255431. The reversal of 428255430 is 34552824.

It is a junction number, because it is equal to n+sod(n) for n = 428255391 and 428255400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428255431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52392 + ... + 60011.

It is an arithmetic number, because the mean of its divisors is an integer number (32372352).

Almost surely, 2^428255430 is an apocalyptic number.

428255430 is an abundant number, since it is smaller than the sum of its proper divisors (607659834).

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

428255430 is a wasteful number, since it uses less digits than its factorization.

428255430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112540.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 428255430 is about 20694.3332823263. Note that the first 3 decimals coincide. The cubic root of 428255430 is about 753.7620928785.

The spelling of 428255430 in words is "four hundred twenty-eight million, two hundred fifty-five thousand, four hundred thirty".