228328727 has 4 divisors (see below), whose sum is σ = 249085896. Its totient is φ = 207571560.

The previous prime is 228328703. The next prime is 228328741. The reversal of 228328727 is 727823822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228328727 - 2⁶ = 228328663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228328777) 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 in 3 ways as a sum of consecutive naturals, for example, 10378568 + ... + 10378589.

It is an arithmetic number, because the mean of its divisors is an integer number (62271474).

Almost surely, 2^228328727 is an apocalyptic number.

228328727 is a deficient number, since it is larger than the sum of its proper divisors (20757169).

228328727 is a wasteful number, since it uses less digits than its factorization.

228328727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20757168.

The product of its digits is 150528, while the sum is 41.

The square root of 228328727 is about 15110.5501885272. The cubic root of 228328727 is about 611.2049344566.

The spelling of 228328727 in words is "two hundred twenty-eight million, three hundred twenty-eight thousand, seven hundred twenty-seven".