228382865 has 4 divisors (see below), whose sum is σ = 274059444. Its totient is φ = 182706288.

The previous prime is 228382853. The next prime is 228382867. The reversal of 228382865 is 568283822.

228382865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 568283822 = 2 ⋅284141911.

It can be written as a sum of positive squares in 2 ways, for example, as 33166081 + 195216784 = 5759^2 + 13972^2 .

It is a cyclic number.

It is not a de Polignac number, because 228382865 - 2⁴ = 228382849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228382867) 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, 22838282 + ... + 22838291.

It is an arithmetic number, because the mean of its divisors is an integer number (68514861).

Almost surely, 2^228382865 is an apocalyptic number.

It is an amenable number.

228382865 is a deficient number, since it is larger than the sum of its proper divisors (45676579).

228382865 is an equidigital number, since it uses as much as digits as its factorization.

228382865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45676578.

The product of its digits is 368640, while the sum is 44.

The square root of 228382865 is about 15112.3414797311. The cubic root of 228382865 is about 611.2532373257.

The spelling of 228382865 in words is "two hundred twenty-eight million, three hundred eighty-two thousand, eight hundred sixty-five".