228297193 has 16 divisors (see below), whose sum is σ = 240570000. Its totient is φ = 216358912.

The previous prime is 228297187. The next prime is 228297203. The reversal of 228297193 is 391792822.

It can be written as a sum of positive squares in 8 ways, for example, as 11235904 + 217061289 = 3352^2 + 14733^2 .

It is a cyclic number.

It is not a de Polignac number, because 228297193 - 2⁵ = 228297161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228297133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508233 + ... + 508681.

It is an arithmetic number, because the mean of its divisors is an integer number (15035625).

Almost surely, 2^228297193 is an apocalyptic number.

It is an amenable number.

228297193 is a deficient number, since it is larger than the sum of its proper divisors (12272807).

228297193 is a wasteful number, since it uses less digits than its factorization.

228297193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764.

The product of its digits is 108864, while the sum is 43.

The square root of 228297193 is about 15109.5067093536. The cubic root of 228297193 is about 611.1767957521.

The spelling of 228297193 in words is "two hundred twenty-eight million, two hundred ninety-seven thousand, one hundred ninety-three".