118172106 has 48 divisors (see below), whose sum is σ = 278468736. Its totient is φ = 36000288.

The previous prime is 118172099. The next prime is 118172107. The reversal of 118172106 is 601271811.

It is a self number, because there is not a number n which added to its sum of digits gives 118172106.

It is not an unprimeable number, because it can be changed into a prime (118172107) 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 23 ways as a sum of consecutive naturals, for example, 21651 + ... + 26553.

It is an arithmetic number, because the mean of its divisors is an integer number (5801432).

Almost surely, 2^118172106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118172106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139234368).

118172106 is an abundant number, since it is smaller than the sum of its proper divisors (160296630).

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

118172106 is a wasteful number, since it uses less digits than its factorization.

118172106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027 (or 5024 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 118172106 is about 10870.6994255200. The cubic root of 118172106 is about 490.7251598074.

The spelling of 118172106 in words is "one hundred eighteen million, one hundred seventy-two thousand, one hundred six".