228491968 has 28 divisors (see below), whose sum is σ = 480087432. Its totient is φ = 107525120.

The previous prime is 228491941. The next prime is 228491969. The reversal of 228491968 is 869194822.

It is not an unprimeable number, because it can be changed into a prime (228491969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103918 + ... + 106093.

Almost surely, 2^228491968 is an apocalyptic number.

It is an amenable number.

228491968 is an abundant number, since it is smaller than the sum of its proper divisors (251595464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228491968 is a wasteful number, since it uses less digits than its factorization.

228491968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210040 (or 210030 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 228491968 is about 15115.9507805497. The cubic root of 228491968 is about 611.3505577400.

The spelling of 228491968 in words is "two hundred twenty-eight million, four hundred ninety-one thousand, nine hundred sixty-eight".