128671344 has 120 divisors (see below), whose sum is σ = 383011200. Its totient is φ = 40210560.

The previous prime is 128671343. The next prime is 128671349. The reversal of 128671344 is 443176821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128671299 and 128671308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128671343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 358237 + ... + 358595.

It is an arithmetic number, because the mean of its divisors is an integer number (3191760).

Almost surely, 2^128671344 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 128671344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191505600).

128671344 is an abundant number, since it is smaller than the sum of its proper divisors (254339856).

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

128671344 is a wasteful number, since it uses less digits than its factorization.

128671344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 514 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 128671344 is about 11343.3391909085. The cubic root of 128671344 is about 504.8479678282.

The spelling of 128671344 in words is "one hundred twenty-eight million, six hundred seventy-one thousand, three hundred forty-four".