118991712 has 96 divisors (see below), whose sum is σ = 360364032. Its totient is φ = 33675264.

The previous prime is 118991693. The next prime is 118991749. The reversal of 118991712 is 217199811.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75153 + ... + 76719.

It is an arithmetic number, because the mean of its divisors is an integer number (3753792).

Almost surely, 2^118991712 is an apocalyptic number.

118991712 is a gapful number since it is divisible by the number (12) 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 118991712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180182016).

118991712 is an abundant number, since it is smaller than the sum of its proper divisors (241372320).

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

118991712 is a wasteful number, since it uses less digits than its factorization.

118991712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1692 counting only the distinct ones).

The product of its digits is 9072, while the sum is 39.

The square root of 118991712 is about 10908.3322281639. The cubic root of 118991712 is about 491.8570541166.

The spelling of 118991712 in words is "one hundred eighteen million, nine hundred ninety-one thousand, seven hundred twelve".