118617228 has 108 divisors (see below), whose sum is σ = 337526280. Its totient is φ = 34905600.

The previous prime is 118617173. The next prime is 118617229. The reversal of 118617228 is 822716811.

118617228 is a `hidden beast` number, since 1 + 18 + 617 + 2 + 28 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 118617192 and 118617201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118617229) 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 35 ways as a sum of consecutive naturals, for example, 1174378 + ... + 1174478.

Almost surely, 2^118617228 is an apocalyptic number.

118617228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118617228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168763140).

118617228 is an abundant number, since it is smaller than the sum of its proper divisors (218909052).

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

118617228 is a wasteful number, since it uses less digits than its factorization.

118617228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 142 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 118617228 is about 10891.1536579005. The cubic root of 118617228 is about 491.3405302922.

118617228 divided by its sum of digits (36) gives a palindrome (3294923).

The spelling of 118617228 in words is "one hundred eighteen million, six hundred seventeen thousand, two hundred twenty-eight".