118986840 has 128 divisors (see below), whose sum is σ = 453312000. Its totient is φ = 27195264.

The previous prime is 118986823. The next prime is 118986869. The reversal of 118986840 is 48689811.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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, 310 + ... + 15429.

It is an arithmetic number, because the mean of its divisors is an integer number (3541500).

Almost surely, 2^118986840 is an apocalyptic number.

118986840 is a gapful number since it is divisible by the number (10) 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 118986840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226656000).

118986840 is an abundant number, since it is smaller than the sum of its proper divisors (334325160).

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

118986840 is a wasteful number, since it uses less digits than its factorization.

118986840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15766 (or 15756 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 118986840 is about 10908.1089103474. The cubic root of 118986840 is about 491.8503411553.

The spelling of 118986840 in words is "one hundred eighteen million, nine hundred eighty-six thousand, eight hundred forty".