229002728 has 8 divisors (see below), whose sum is σ = 429380130. Its totient is φ = 114501360.

The previous prime is 229002721. The next prime is 229002737. The reversal of 229002728 is 827200922.

It can be written as a sum of positive squares in only one way, i.e., 199430884 + 29571844 = 14122^2 + 5438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 229002694 and 229002703.

It is not an unprimeable number, because it can be changed into a prime (229002721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14312663 + ... + 14312678.

Almost surely, 2^229002728 is an apocalyptic number.

It is an amenable number.

229002728 is a deficient number, since it is larger than the sum of its proper divisors (200377402).

229002728 is a wasteful number, since it uses less digits than its factorization.

229002728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28625347 (or 28625343 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 229002728 is about 15132.8360858102. The cubic root of 229002728 is about 611.8057466564.

The spelling of 229002728 in words is "two hundred twenty-nine million, two thousand, seven hundred twenty-eight".