228864236 has 6 divisors (see below), whose sum is σ = 400512420. Its totient is φ = 114432116.

The previous prime is 228864193. The next prime is 228864239. The reversal of 228864236 is 632468822.

It is a junction number, because it is equal to n+sod(n) for n = 228864193 and 228864202.

It is not an unprimeable number, because it can be changed into a prime (228864239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28608026 + ... + 28608033.

It is an arithmetic number, because the mean of its divisors is an integer number (66752070).

Almost surely, 2^228864236 is an apocalyptic number.

It is an amenable number.

228864236 is a deficient number, since it is larger than the sum of its proper divisors (171648184).

228864236 is a wasteful number, since it uses less digits than its factorization.

228864236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57216063 (or 57216061 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The square root of 228864236 is about 15128.2595165472. The cubic root of 228864236 is about 611.6823896285.

The spelling of 228864236 in words is "two hundred twenty-eight million, eight hundred sixty-four thousand, two hundred thirty-six".