428909670420 has 1728 divisors, whose sum is σ = 1760635699200. Its totient is φ = 77278924800.

The previous prime is 428909670367. The next prime is 428909670463. The reversal of 428909670420 is 24076909824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 4819209736 + ... + 4819209824.

It is an arithmetic number, because the mean of its divisors is an integer number (1018886400).

Almost surely, 2^428909670420 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 428909670420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880317849600).

428909670420 is an abundant number, since it is smaller than the sum of its proper divisors (1331726028780).

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

428909670420 is a wasteful number, since it uses less digits than its factorization.

428909670420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 428909670420 in words is "four hundred twenty-eight billion, nine hundred nine million, six hundred seventy thousand, four hundred twenty".