428085812 has 48 divisors (see below), whose sum is σ = 955756032. Its totient is φ = 162902880.

The previous prime is 428085809. The next prime is 428085841. The reversal of 428085812 is 218580824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2918 + ... + 29405.

It is an arithmetic number, because the mean of its divisors is an integer number (19911584).

Almost surely, 2^428085812 is an apocalyptic number.

It is an amenable number.

428085812 is an abundant number, since it is smaller than the sum of its proper divisors (527670220).

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

428085812 is a wasteful number, since it uses less digits than its factorization.

428085812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32388 (or 32386 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 428085812 is about 20690.2347014238. The cubic root of 428085812 is about 753.6625662154.

The spelling of 428085812 in words is "four hundred twenty-eight million, eighty-five thousand, eight hundred twelve".