228117036 has 96 divisors (see below), whose sum is σ = 644087808. Its totient is φ = 61427520.

The previous prime is 228117031. The next prime is 228117037. The reversal of 228117036 is 630711822.

It is a super-2 number, since 2×228117036² = 104074764226850592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228116994 and 228117012.

It is not an unprimeable number, because it can be changed into a prime (228117031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136341 + ... + 138003.

It is an arithmetic number, because the mean of its divisors is an integer number (6709248).

Almost surely, 2^228117036 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 228117036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322043904).

228117036 is an abundant number, since it is smaller than the sum of its proper divisors (415970772).

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

228117036 is a wasteful number, since it uses less digits than its factorization.

228117036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 228117036 is about 15103.5438225603. The cubic root of 228117036 is about 611.0159867170.

Adding to 228117036 its reverse (630711822), we get a palindrome (858828858).

The spelling of 228117036 in words is "two hundred twenty-eight million, one hundred seventeen thousand, thirty-six".