228445886 has 8 divisors (see below), whose sum is σ = 344583720. Its totient is φ = 113584648.

The previous prime is 228445859. The next prime is 228445901. The reversal of 228445886 is 688544822.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 228445886.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318701 + ... + 319416.

It is an arithmetic number, because the mean of its divisors is an integer number (43072965).

Almost surely, 2^228445886 is an apocalyptic number.

228445886 is a deficient number, since it is larger than the sum of its proper divisors (116137834).

228445886 is a wasteful number, since it uses less digits than its factorization.

228445886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638298.

The product of its digits is 983040, while the sum is 47.

The square root of 228445886 is about 15114.4264198149. The cubic root of 228445886 is about 611.3094561486.

The spelling of 228445886 in words is "two hundred twenty-eight million, four hundred forty-five thousand, eight hundred eighty-six".