128438160 has 40 divisors (see below), whose sum is σ = 398159040. Its totient is φ = 34250112.

The previous prime is 128438159. The next prime is 128438207. The reversal of 128438160 is 61834821.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267340 + ... + 267819.

It is an arithmetic number, because the mean of its divisors is an integer number (9953976).

Almost surely, 2^128438160 is an apocalyptic number.

128438160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128438160 is an abundant number, since it is smaller than the sum of its proper divisors (269720880).

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

128438160 is a wasteful number, since it uses less digits than its factorization.

128438160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535175 (or 535169 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 128438160 is about 11333.0560750400. The cubic root of 128438160 is about 504.5428140140.

The spelling of 128438160 in words is "one hundred twenty-eight million, four hundred thirty-eight thousand, one hundred sixty".