229744128 has 80 divisors (see below), whose sum is σ = 615224016. Its totient is φ = 76185600.

The previous prime is 229744111. The next prime is 229744147. The reversal of 229744128 is 821447922.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572728 + ... + 573128.

Almost surely, 2^229744128 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 229744128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307612008).

229744128 is an abundant number, since it is smaller than the sum of its proper divisors (385479888).

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

229744128 is an equidigital number, since it uses as much as digits as its factorization.

229744128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 779 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 229744128 is about 15157.3126905794. The cubic root of 229744128 is about 612.4652790536.

The spelling of 229744128 in words is "two hundred twenty-nine million, seven hundred forty-four thousand, one hundred twenty-eight".