128239224 has 64 divisors (see below), whose sum is σ = 329041440. Its totient is φ = 41633280.

The previous prime is 128239217. The next prime is 128239229. The reversal of 128239224 is 422932821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128239229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229954 + ... + 230510.

Almost surely, 2^128239224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128239224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164520720).

128239224 is an abundant number, since it is smaller than the sum of its proper divisors (200802216).

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

128239224 is a wasteful number, since it uses less digits than its factorization.

128239224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 796 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 128239224 is about 11324.2758708891. The cubic root of 128239224 is about 504.2821863954.

The spelling of 128239224 in words is "one hundred twenty-eight million, two hundred thirty-nine thousand, two hundred twenty-four".