228734565 has 16 divisors (see below), whose sum is σ = 366467328. Its totient is φ = 121827776.

The previous prime is 228734549. The next prime is 228734579. The reversal of 228734565 is 565437822.

228734565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 228734565 - 2⁴ = 228734549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1732 + ... + 21458.

It is an arithmetic number, because the mean of its divisors is an integer number (22904208).

Almost surely, 2^228734565 is an apocalyptic number.

It is an amenable number.

228734565 is a deficient number, since it is larger than the sum of its proper divisors (137732763).

228734565 is a wasteful number, since it uses less digits than its factorization.

228734565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20508.

The product of its digits is 403200, while the sum is 42.

The square root of 228734565 is about 15123.9731882862. The cubic root of 228734565 is about 611.5668444866.

The spelling of 228734565 in words is "two hundred twenty-eight million, seven hundred thirty-four thousand, five hundred sixty-five".