228652297 has 4 divisors (see below), whose sum is σ = 228723460. Its totient is φ = 228581136.

The previous prime is 228652189. The next prime is 228652309. The reversal of 228652297 is 792256822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 220789881 + 7862416 = 14859^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 228652297 - 2¹¹ = 228650249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228652597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30522 + ... + 37267.

It is an arithmetic number, because the mean of its divisors is an integer number (57180865).

Almost surely, 2^228652297 is an apocalyptic number.

It is an amenable number.

228652297 is a deficient number, since it is larger than the sum of its proper divisors (71163).

228652297 is an equidigital number, since it uses as much as digits as its factorization.

228652297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71162.

The product of its digits is 241920, while the sum is 43.

The square root of 228652297 is about 15121.2531557408. The cubic root of 228652297 is about 611.4935158021.

The spelling of 228652297 in words is "two hundred twenty-eight million, six hundred fifty-two thousand, two hundred ninety-seven".