228016128 has 60 divisors (see below), whose sum is σ = 608155520. Its totient is φ = 75988992.

The previous prime is 228016099. The next prime is 228016141. The reversal of 228016128 is 821610822.

It is a super-2 number, since 2×228016128² = 103982709256224768, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 228016095 and 228016104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46833 + ... + 51471.

Almost surely, 2^228016128 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 228016128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304077760).

228016128 is an abundant number, since it is smaller than the sum of its proper divisors (380139392).

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

228016128 is an frugal number, since it uses more digits than its factorization.

228016128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670 (or 4644 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 228016128 is about 15100.2029125439. The cubic root of 228016128 is about 610.9258787388.

The spelling of 228016128 in words is "two hundred twenty-eight million, sixteen thousand, one hundred twenty-eight".