128173344 has 96 divisors (see below), whose sum is σ = 374137344. Its totient is φ = 38154240.

The previous prime is 128173337. The next prime is 128173349. The reversal of 128173344 is 443371821.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×128173344² = 32856812224284672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128173349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37032 + ... + 40344.

It is an arithmetic number, because the mean of its divisors is an integer number (3897264).

Almost surely, 2^128173344 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 128173344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187068672).

128173344 is an abundant number, since it is smaller than the sum of its proper divisors (245964000).

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

128173344 is a wasteful number, since it uses less digits than its factorization.

128173344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370 (or 3362 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 128173344 is about 11321.3667019490. The cubic root of 128173344 is about 504.1958170822.

It can be divided in two parts, 12817 and 3344, that added together give a palindrome (16161).

The spelling of 128173344 in words is "one hundred twenty-eight million, one hundred seventy-three thousand, three hundred forty-four".