128964224 has 32 divisors (see below), whose sum is σ = 262907040. Its totient is φ = 62979840.

The previous prime is 128964221. The next prime is 128964239. The reversal of 128964224 is 422469821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128964221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6212 + ... + 17219.

It is an arithmetic number, because the mean of its divisors is an integer number (8215845).

Almost surely, 2^128964224 is an apocalyptic number.

It is an amenable number.

128964224 is an abundant number, since it is smaller than the sum of its proper divisors (133942816).

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

128964224 is an equidigital number, since it uses as much as digits as its factorization.

128964224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23488 (or 23476 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 128964224 is about 11356.2416318076. The cubic root of 128964224 is about 505.2307203104.

The spelling of 128964224 in words is "one hundred twenty-eight million, nine hundred sixty-four thousand, two hundred twenty-four".