228367565 has 8 divisors (see below), whose sum is σ = 276754968. Its totient is φ = 180884800.

The previous prime is 228367553. The next prime is 228367567. The reversal of 228367565 is 565763822.

It can be written as a sum of positive squares in 4 ways, for example, as 11600836 + 216766729 = 3406^2 + 14723^2 .

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

It is not a de Polignac number, because 228367565 - 2⁴ = 228367549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228367567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225602 + ... + 226611.

It is an arithmetic number, because the mean of its divisors is an integer number (34594371).

Almost surely, 2^228367565 is an apocalyptic number.

It is an amenable number.

228367565 is a deficient number, since it is larger than the sum of its proper divisors (48387403).

228367565 is a wasteful number, since it uses less digits than its factorization.

228367565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452319.

The product of its digits is 604800, while the sum is 44.

The square root of 228367565 is about 15111.8352624690. The cubic root of 228367565 is about 611.2395871724.

The spelling of 228367565 in words is "two hundred twenty-eight million, three hundred sixty-seven thousand, five hundred sixty-five".