228169216 has 120 divisors (see below), whose sum is σ = 522466560. Its totient is φ = 99348480.

The previous prime is 228169163. The next prime is 228169217. The reversal of 228169216 is 612961822.

It is a super-2 number, since 2×228169216² = 104122382260109312, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228169217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796545 + ... + 1796671.

It is an arithmetic number, because the mean of its divisors is an integer number (4353888).

Almost surely, 2^228169216 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 228169216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261233280).

228169216 is an abundant number, since it is smaller than the sum of its proper divisors (294297344).

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

228169216 is a wasteful number, since it uses less digits than its factorization.

228169216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 169 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 228169216 is about 15105.2711329522. The cubic root of 228169216 is about 611.0625715521.

The spelling of 228169216 in words is "two hundred twenty-eight million, one hundred sixty-nine thousand, two hundred sixteen".