428989371888 has 160 divisors (see below), whose sum is σ = 1382548654080. Its totient is φ = 111355764480.

The previous prime is 428989371847. The next prime is 428989371893. The reversal of 428989371888 is 888173989824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5977723 + ... + 6049061.

It is an arithmetic number, because the mean of its divisors is an integer number (8640929088).

Almost surely, 2^428989371888 is an apocalyptic number.

428989371888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428989371888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691274327040).

428989371888 is an abundant number, since it is smaller than the sum of its proper divisors (953559282192).

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

428989371888 is a wasteful number, since it uses less digits than its factorization.

428989371888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72995 (or 72989 counting only the distinct ones).

The product of its digits is 445906944, while the sum is 75.

The spelling of 428989371888 in words is "four hundred twenty-eight billion, nine hundred eighty-nine million, three hundred seventy-one thousand, eight hundred eighty-eight".