428460786 has 64 divisors (see below), whose sum is σ = 1035699840. Its totient is φ = 130507200.

The previous prime is 428460757. The next prime is 428460803. The reversal of 428460786 is 687064824.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67881 + ... + 73923.

It is an arithmetic number, because the mean of its divisors is an integer number (16182810).

Almost surely, 2^428460786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428460786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517849920).

428460786 is an abundant number, since it is smaller than the sum of its proper divisors (607239054).

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

428460786 is a wasteful number, since it uses less digits than its factorization.

428460786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6168 (or 6162 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 428460786 is about 20699.2943357980. The cubic root of 428460786 is about 753.8825543466.

The spelling of 428460786 in words is "four hundred twenty-eight million, four hundred sixty thousand, seven hundred eighty-six".