428111802228 has 144 divisors (see below), whose sum is σ = 1120547131200. Its totient is φ = 127090275840.

The previous prime is 428111802221. The next prime is 428111802229. The reversal of 428111802228 is 822208111824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428111802221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15779851 + ... + 15806957.

It is an arithmetic number, because the mean of its divisors is an integer number (7781577300).

Almost surely, 2^428111802228 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 428111802228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560273565600).

428111802228 is an abundant number, since it is smaller than the sum of its proper divisors (692435328972).

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

428111802228 is a wasteful number, since it uses less digits than its factorization.

428111802228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27358 (or 27345 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 39.

The spelling of 428111802228 in words is "four hundred twenty-eight billion, one hundred eleven million, eight hundred two thousand, two hundred twenty-eight".