428019876 has 60 divisors (see below), whose sum is σ = 1123406592. Its totient is φ = 142102512.

The previous prime is 428019827. The next prime is 428019881. The reversal of 428019876 is 678910824.

It is a congruent number.

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, 82701 + ... + 87723.

Almost surely, 2^428019876 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 428019876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561703296).

428019876 is an abundant number, since it is smaller than the sum of its proper divisors (695386716).

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

428019876 is a wasteful number, since it uses less digits than its factorization.

428019876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302 (or 5291 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 428019876 is about 20688.6412313617. The cubic root of 428019876 is about 753.6238698878.

The spelling of 428019876 in words is "four hundred twenty-eight million, nineteen thousand, eight hundred seventy-six".