228635329 has 8 divisors (see below), whose sum is σ = 260706600. Its totient is φ = 198633216.

The previous prime is 228635317. The next prime is 228635339. The reversal of 228635329 is 923536822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47679025 + 180956304 = 6905^2 + 13452^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228635329 - 2⁷ = 228635201 is a prime.

It is a super-2 number, since 2×228635329² = 104548227333876482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228635291 and 228635300.

It is not an unprimeable number, because it can be changed into a prime (228635339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517054 + ... + 517495.

It is an arithmetic number, because the mean of its divisors is an integer number (32588325).

Almost surely, 2^228635329 is an apocalyptic number.

It is an amenable number.

228635329 is a deficient number, since it is larger than the sum of its proper divisors (32071271).

228635329 is a wasteful number, since it uses less digits than its factorization.

228635329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034579.

The product of its digits is 155520, while the sum is 40.

The square root of 228635329 is about 15120.6920807217. The cubic root of 228635329 is about 611.4783893725.

The spelling of 228635329 in words is "two hundred twenty-eight million, six hundred thirty-five thousand, three hundred twenty-nine".