228327309 has 24 divisors (see below), whose sum is σ = 393491520. Its totient is φ = 130471992.

The previous prime is 228327287. The next prime is 228327311. The reversal of 228327309 is 903723822.

228327309 is a `hidden beast` number, since 2 + 28 + 327 + 309 = 666.

It is not a de Polignac number, because 228327309 - 2⁵ = 228327277 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228327349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84969 + ... + 87614.

It is an arithmetic number, because the mean of its divisors is an integer number (16395480).

Almost surely, 2^228327309 is an apocalyptic number.

It is an amenable number.

228327309 is a deficient number, since it is larger than the sum of its proper divisors (165164211).

228327309 is a wasteful number, since it uses less digits than its factorization.

228327309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172606 (or 172593 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 228327309 is about 15110.5032675950. The cubic root of 228327309 is about 611.2036691896.

It can be divided in two parts, 2283 and 27309, that added together give a palindrome (29592).

The spelling of 228327309 in words is "two hundred twenty-eight million, three hundred twenty-seven thousand, three hundred nine".