228730207 has 4 divisors (see below), whose sum is σ = 228769200. Its totient is φ = 228691216.

The previous prime is 228730169. The next prime is 228730211. The reversal of 228730207 is 702037822.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228730207 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 (228730217) 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, 8707 + ... + 23092.

It is an arithmetic number, because the mean of its divisors is an integer number (57192300).

Almost surely, 2^228730207 is an apocalyptic number.

228730207 is a deficient number, since it is larger than the sum of its proper divisors (38993).

228730207 is an equidigital number, since it uses as much as digits as its factorization.

228730207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38992.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 228730207 is about 15123.8291117032. The cubic root of 228730207 is about 611.5629604719.

The spelling of 228730207 in words is "two hundred twenty-eight million, seven hundred thirty thousand, two hundred seven".