228168307 has 4 divisors (see below), whose sum is σ = 234335056. Its totient is φ = 222001560.

The previous prime is 228168293. The next prime is 228168329. The reversal of 228168307 is 703861822.

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 228168307 - 2²³ = 219779699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 6166711 = 228168307 / (2 + 2 + 8 + 1 + 6 + 8 + 3 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228168377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3083319 + ... + 3083392.

It is an arithmetic number, because the mean of its divisors is an integer number (58583764).

Almost surely, 2^228168307 is an apocalyptic number.

228168307 is a deficient number, since it is larger than the sum of its proper divisors (6166749).

228168307 is an equidigital number, since it uses as much as digits as its factorization.

228168307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6166748.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 228168307 is about 15105.2410440880. The cubic root of 228168307 is about 611.0617600833.

The spelling of 228168307 in words is "two hundred twenty-eight million, one hundred sixty-eight thousand, three hundred seven".