428027500 has 60 divisors (see below), whose sum is σ = 940717624. Its totient is φ = 170352000.

The previous prime is 428027489. The next prime is 428027531. The reversal of 428027500 is 5720824.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 782227 + ... + 782773.

Almost surely, 2^428027500 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 428027500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470358812).

428027500 is an abundant number, since it is smaller than the sum of its proper divisors (512690124).

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

428027500 is a wasteful number, since it uses less digits than its factorization.

428027500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 428027500 is about 20688.8254862377. The cubic root of 428027500 is about 753.6283444419.

The spelling of 428027500 in words is "four hundred twenty-eight million, twenty-seven thousand, five hundred".