228116736 has 216 divisors, whose sum is σ = 721695520. Its totient is φ = 71663616.

The previous prime is 228116723. The next prime is 228116753. The reversal of 228116736 is 637611822.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 228116736.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1181856 + ... + 1182048.

Almost surely, 2^228116736 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 228116736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360847760).

228116736 is an abundant number, since it is smaller than the sum of its proper divisors (493578784).

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

228116736 is an equidigital number, since it uses as much as digits as its factorization.

228116736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 217 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 228116736 is about 15103.5338911130. The cubic root of 228116736 is about 611.0157188649.

It can be divided in two parts, 228 and 116736, that added together give a square (116964 = 342²).

The spelling of 228116736 in words is "two hundred twenty-eight million, one hundred sixteen thousand, seven hundred thirty-six".