128170944 has 168 divisors, whose sum is σ = 414842960. Its totient is φ = 38776320.

The previous prime is 128170937. The next prime is 128170963. The reversal of 128170944 is 449071821.

It is a super-2 number, since 2×128170944² = 32855581771702272, which contains 22 as substring.

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 = 128170899 and 128170908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208782 + ... + 209394.

Almost surely, 2^128170944 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 128170944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207421480).

128170944 is an abundant number, since it is smaller than the sum of its proper divisors (286672016).

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

128170944 is a wasteful number, since it uses less digits than its factorization.

128170944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 128170944 is about 11321.2607071827. The cubic root of 128170944 is about 504.1926701005.

The spelling of 128170944 in words is "one hundred twenty-eight million, one hundred seventy thousand, nine hundred forty-four".