128944224 has 60 divisors (see below), whose sum is σ = 379229004. Its totient is φ = 42980544.

The previous prime is 128944213. The next prime is 128944259. The reversal of 128944224 is 422449821.

It is a super-2 number, since 2×128944224² = 33253225805924352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22282 + ... + 27465.

Almost surely, 2^128944224 is an apocalyptic number.

It is an amenable number.

128944224 is an abundant number, since it is smaller than the sum of its proper divisors (250284780).

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

128944224 is an equidigital number, since it uses as much as digits as its factorization.

128944224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49769 (or 49752 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 128944224 is about 11355.3610246438. The cubic root of 128944224 is about 505.2046016022.

The spelling of 128944224 in words is "one hundred twenty-eight million, nine hundred forty-four thousand, two hundred twenty-four".