229728366 has 128 divisors (see below), whose sum is σ = 606720000. Its totient is φ = 64393056.

The previous prime is 229728353. The next prime is 229728377. The reversal of 229728366 is 663827922.

229728366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1463160 + ... + 1463316.

It is an arithmetic number, because the mean of its divisors is an integer number (4740000).

Almost surely, 2^229728366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229728366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303360000).

229728366 is an abundant number, since it is smaller than the sum of its proper divisors (376991634).

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

229728366 is a wasteful number, since it uses less digits than its factorization.

229728366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 248 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 229728366 is about 15156.7927346124. The cubic root of 229728366 is about 612.4512723140.

The spelling of 229728366 in words is "two hundred twenty-nine million, seven hundred twenty-eight thousand, three hundred sixty-six".