128159712 has 192 divisors, whose sum is σ = 406022400. Its totient is φ = 39191040.

The previous prime is 128159711. The next prime is 128159743. The reversal of 128159712 is 217951821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128159711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 607287 + ... + 607497.

It is an arithmetic number, because the mean of its divisors is an integer number (2114700).

Almost surely, 2^128159712 is an apocalyptic number.

128159712 is a gapful number since it is divisible by the number (12) 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 128159712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203011200).

128159712 is an abundant number, since it is smaller than the sum of its proper divisors (277862688).

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

128159712 is a wasteful number, since it uses less digits than its factorization.

128159712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 272 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 128159712 is about 11320.7646384862. The cubic root of 128159712 is about 504.1779417038.

The spelling of 128159712 in words is "one hundred twenty-eight million, one hundred fifty-nine thousand, seven hundred twelve".