228228913 has 16 divisors (see below), whose sum is σ = 263969280. Its totient is φ = 195350400.

The previous prime is 228228911. The next prime is 228228941. The reversal of 228228913 is 319822822.

It is a cyclic number.

It is not a de Polignac number, because 228228913 - 2¹ = 228228911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228228911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3573 + ... + 21661.

It is an arithmetic number, because the mean of its divisors is an integer number (16498080).

Almost surely, 2^228228913 is an apocalyptic number.

It is an amenable number.

228228913 is a deficient number, since it is larger than the sum of its proper divisors (35740367).

228228913 is a wasteful number, since it uses less digits than its factorization.

228228913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18168.

The product of its digits is 27648, while the sum is 37.

The square root of 228228913 is about 15107.2470357772. The cubic root of 228228913 is about 611.1158586433.

The spelling of 228228913 in words is "two hundred twenty-eight million, two hundred twenty-eight thousand, nine hundred thirteen".