228928903 has 4 divisors (see below), whose sum is σ = 261633040. Its totient is φ = 196224768.

The previous prime is 228928897. The next prime is 228928907. The reversal of 228928903 is 309829822.

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 228928903 - 2⁹ = 228928391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228928903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228928907) 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, 16352058 + ... + 16352071.

It is an arithmetic number, because the mean of its divisors is an integer number (65408260).

Almost surely, 2^228928903 is an apocalyptic number.

228928903 is a deficient number, since it is larger than the sum of its proper divisors (32704137).

228928903 is an equidigital number, since it uses as much as digits as its factorization.

228928903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32704136.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 228928903 is about 15130.3966570609. The cubic root of 228928903 is about 611.7399957459.

The spelling of 228928903 in words is "two hundred twenty-eight million, nine hundred twenty-eight thousand, nine hundred three".