118637680 has 160 divisors (see below), whose sum is σ = 336549888. Its totient is φ = 38016000.

The previous prime is 118637677. The next prime is 118637681. The reversal of 118637680 is 86736811.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118637681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785605 + ... + 785755.

Almost surely, 2^118637680 is an apocalyptic number.

118637680 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 118637680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168274944).

118637680 is an abundant number, since it is smaller than the sum of its proper divisors (217912208).

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

118637680 is a wasteful number, since it uses less digits than its factorization.

118637680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 118637680 is about 10892.0925445940. The cubic root of 118637680 is about 491.3687676717.

The spelling of 118637680 in words is "one hundred eighteen million, six hundred thirty-seven thousand, six hundred eighty".