228445918 has 8 divisors (see below), whose sum is σ = 351930312. Its totient is φ = 111135816.

The previous prime is 228445901. The next prime is 228445927. The reversal of 228445918 is 819544822.

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

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, 1543480 + ... + 1543627.

It is an arithmetic number, because the mean of its divisors is an integer number (43991289).

Almost surely, 2^228445918 is an apocalyptic number.

228445918 is a deficient number, since it is larger than the sum of its proper divisors (123484394).

228445918 is a wasteful number, since it uses less digits than its factorization.

228445918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087146.

The product of its digits is 184320, while the sum is 43.

The square root of 228445918 is about 15114.4274784062. The cubic root of 228445918 is about 611.3094846921.

The spelling of 228445918 in words is "two hundred twenty-eight million, four hundred forty-five thousand, nine hundred eighteen".