128359220 has 144 divisors (see below), whose sum is σ = 321753600. Its totient is φ = 42873600.

The previous prime is 128359219. The next prime is 128359223. The reversal of 128359220 is 22953821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128359223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2175551 + ... + 2175609.

It is an arithmetic number, because the mean of its divisors is an integer number (2234400).

Almost surely, 2^128359220 is an apocalyptic number.

128359220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128359220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160876800).

128359220 is an abundant number, since it is smaller than the sum of its proper divisors (193394380).

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

128359220 is a wasteful number, since it uses less digits than its factorization.

128359220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 128359220 is about 11329.5728074804. The cubic root of 128359220 is about 504.4394263285.

The spelling of 128359220 in words is "one hundred twenty-eight million, three hundred fifty-nine thousand, two hundred twenty".