116387640 has 96 divisors (see below), whose sum is σ = 390499200. Its totient is φ = 30032640.

The previous prime is 116387639. The next prime is 116387657. The reversal of 116387640 is 46783611.

116387640 is a `hidden beast` number, since 1 + 1 + 6 + 3 + 8 + 7 + 640 = 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 = 116387595 and 116387604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5946 + ... + 16374.

It is an arithmetic number, because the mean of its divisors is an integer number (4067700).

Almost surely, 2^116387640 is an apocalyptic number.

116387640 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 116387640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195249600).

116387640 is an abundant number, since it is smaller than the sum of its proper divisors (274111560).

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

116387640 is a wasteful number, since it uses less digits than its factorization.

116387640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10477 (or 10470 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 116387640 is about 10788.3103403638. The cubic root of 116387640 is about 488.2425449329.

The spelling of 116387640 in words is "one hundred sixteen million, three hundred eighty-seven thousand, six hundred forty".