228703207 has 4 divisors (see below), whose sum is σ = 234281376. Its totient is φ = 223125040.

The previous prime is 228703147. The next prime is 228703217. The reversal of 228703207 is 702307822.

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 228703207 - 2¹¹ = 228701159 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 (228703217) 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, 2789023 + ... + 2789104.

It is an arithmetic number, because the mean of its divisors is an integer number (58570344).

Almost surely, 2^228703207 is an apocalyptic number.

228703207 is a deficient number, since it is larger than the sum of its proper divisors (5578169).

228703207 is an equidigital number, since it uses as much as digits as its factorization.

228703207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578168.

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

The square root of 228703207 is about 15122.9364542737. The cubic root of 228703207 is about 611.5388959493.

The spelling of 228703207 in words is "two hundred twenty-eight million, seven hundred three thousand, two hundred seven".