228981168 has 100 divisors (see below), whose sum is σ = 713770288. Its totient is φ = 70450560.

The previous prime is 228981163. The next prime is 228981173. The reversal of 228981168 is 861189822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228981163) and next prime (228981173).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (228981161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10053 + ... + 23643.

Almost surely, 2^228981168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228981168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356885144).

228981168 is an abundant number, since it is smaller than the sum of its proper divisors (484789120).

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

228981168 is a wasteful number, since it uses less digits than its factorization.

228981168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13624 (or 13609 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 228981168 is about 15132.1237108345. The cubic root of 228981168 is about 611.7865460906.

The spelling of 228981168 in words is "two hundred twenty-eight million, nine hundred eighty-one thousand, one hundred sixty-eight".