228368459 has 4 divisors (see below), whose sum is σ = 249129240. Its totient is φ = 207607680.

The previous prime is 228368443. The next prime is 228368471. The reversal of 228368459 is 954863822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228368459 - 2⁴ = 228368443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228368489) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10380374 + ... + 10380395.

It is an arithmetic number, because the mean of its divisors is an integer number (62282310).

Almost surely, 2^228368459 is an apocalyptic number.

228368459 is a deficient number, since it is larger than the sum of its proper divisors (20760781).

228368459 is a wasteful number, since it uses less digits than its factorization.

228368459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20760780.

The product of its digits is 829440, while the sum is 47.

The square root of 228368459 is about 15111.8648419049. The cubic root of 228368459 is about 611.2403847864.

The spelling of 228368459 in words is "two hundred twenty-eight million, three hundred sixty-eight thousand, four hundred fifty-nine".