229708128 has 96 divisors (see below), whose sum is σ = 656038656. Its totient is φ = 69954048.

The previous prime is 229708123. The next prime is 229708147. The reversal of 229708128 is 821807922.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229708121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127651 + ... + 129437.

It is an arithmetic number, because the mean of its divisors is an integer number (6833736).

Almost surely, 2^229708128 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 229708128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328019328).

229708128 is an abundant number, since it is smaller than the sum of its proper divisors (426330528).

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

229708128 is a wasteful number, since it uses less digits than its factorization.

229708128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 229708128 is about 15156.1250984544. The cubic root of 229708128 is about 612.4332870835.

The spelling of 229708128 in words is "two hundred twenty-nine million, seven hundred eight thousand, one hundred twenty-eight".