428734460 has 72 divisors (see below), whose sum is σ = 1131053280. Its totient is φ = 133626240.

The previous prime is 428734459. The next prime is 428734483. The reversal of 428734460 is 64437824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4286 + ... + 29594.

Almost surely, 2^428734460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428734460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565526640).

428734460 is an abundant number, since it is smaller than the sum of its proper divisors (702318820).

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

428734460 is a wasteful number, since it uses less digits than its factorization.

428734460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25347 (or 25334 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 428734460 is about 20705.9039889593. The cubic root of 428734460 is about 754.0430312201.

The spelling of 428734460 in words is "four hundred twenty-eight million, seven hundred thirty-four thousand, four hundred sixty".