228321365 has 8 divisors (see below), whose sum is σ = 274074840. Its totient is φ = 182597632.

The previous prime is 228321337. The next prime is 228321371. The reversal of 228321365 is 563123822.

It can be written as a sum of positive squares in 4 ways, for example, as 5058001 + 223263364 = 2249^2 + 14942^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228321365 - 2²⁰ = 227272789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16421 + ... + 26949.

It is an arithmetic number, because the mean of its divisors is an integer number (34259355).

Almost surely, 2^228321365 is an apocalyptic number.

It is an amenable number.

228321365 is a deficient number, since it is larger than the sum of its proper divisors (45753475).

228321365 is a wasteful number, since it uses less digits than its factorization.

228321365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14871.

The product of its digits is 17280, while the sum is 32.

The square root of 228321365 is about 15110.3065819327. The cubic root of 228321365 is about 611.1983653619.

The spelling of 228321365 in words is "two hundred twenty-eight million, three hundred twenty-one thousand, three hundred sixty-five".