228137065 has 8 divisors (see below), whose sum is σ = 294823368. Its totient is φ = 168470400.

The previous prime is 228137053. The next prime is 228137081. The reversal of 228137065 is 560731822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13719616 + 214417449 = 3704^2 + 14643^2 .

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

It is not a de Polignac number, because 228137065 - 2⁵ = 228137033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228137065.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1754836 + ... + 1754965.

It is an arithmetic number, because the mean of its divisors is an integer number (36852921).

Almost surely, 2^228137065 is an apocalyptic number.

It is an amenable number.

228137065 is a deficient number, since it is larger than the sum of its proper divisors (66686303).

228137065 is a wasteful number, since it uses less digits than its factorization.

228137065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509819.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 228137065 is about 15104.2068643143. The cubic root of 228137065 is about 611.0338688844.

Adding to 228137065 its reverse (560731822), we get a palindrome (788868887).

The spelling of 228137065 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, sixty-five".