228468587 has 4 divisors (see below), whose sum is σ = 229981776. Its totient is φ = 226955400.

The previous prime is 228468577. The next prime is 228468613. The reversal of 228468587 is 785864822.

It is a happy number.

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 228468587 - 2⁴ = 228468571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228468577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756368 + ... + 756669.

It is an arithmetic number, because the mean of its divisors is an integer number (57495444).

Almost surely, 2^228468587 is an apocalyptic number.

228468587 is a deficient number, since it is larger than the sum of its proper divisors (1513189).

228468587 is a wasteful number, since it uses less digits than its factorization.

228468587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513188.

The product of its digits is 1720320, while the sum is 50.

The square root of 228468587 is about 15115.1773724293. The cubic root of 228468587 is about 611.3297043812.

The spelling of 228468587 in words is "two hundred twenty-eight million, four hundred sixty-eight thousand, five hundred eighty-seven".