128351844 has 48 divisors (see below), whose sum is σ = 333379200. Its totient is φ = 42704928.

The previous prime is 128351837. The next prime is 128351857. The reversal of 128351844 is 448153821.

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

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 128351799 and 128351808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103822 + ... + 105050.

It is an arithmetic number, because the mean of its divisors is an integer number (6945400).

Almost surely, 2^128351844 is an apocalyptic number.

It is an amenable number.

128351844 is an abundant number, since it is smaller than the sum of its proper divisors (205027356).

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

128351844 is a wasteful number, since it uses less digits than its factorization.

128351844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2201 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 128351844 is about 11329.2472830281. The cubic root of 128351844 is about 504.4297638191.

The spelling of 128351844 in words is "one hundred twenty-eight million, three hundred fifty-one thousand, eight hundred forty-four".