118290172 has 96 divisors (see below), whose sum is σ = 287207424. Its totient is φ = 41126400.

The previous prime is 118290169. The next prime is 118290259. The reversal of 118290172 is 271092811.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123648 + ... + 124600.

It is an arithmetic number, because the mean of its divisors is an integer number (2991744).

Almost surely, 2^118290172 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 118290172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143603712).

118290172 is an abundant number, since it is smaller than the sum of its proper divisors (168917252).

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

118290172 is a wasteful number, since it uses less digits than its factorization.

118290172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 118290172 is about 10876.1285391448. The cubic root of 118290172 is about 490.8885335907. Note that the first 3 decimals are identical.

The spelling of 118290172 in words is "one hundred eighteen million, two hundred ninety thousand, one hundred seventy-two".