118643340 has 96 divisors (see below), whose sum is σ = 360448704. Its totient is φ = 29040640.

The previous prime is 118643303. The next prime is 118643341. The reversal of 118643340 is 43346811.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 118643298 and 118643307.

It is not an unprimeable number, because it can be changed into a prime (118643341) 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, 40402 + ... + 43238.

It is an arithmetic number, because the mean of its divisors is an integer number (3754674).

Almost surely, 2^118643340 is an apocalyptic number.

118643340 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 118643340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180224352).

118643340 is an abundant number, since it is smaller than the sum of its proper divisors (241805364).

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

118643340 is a wasteful number, since it uses less digits than its factorization.

118643340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2905 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 118643340 is about 10892.3523630114. The cubic root of 118643340 is about 491.3765816675.

The spelling of 118643340 in words is "one hundred eighteen million, six hundred forty-three thousand, three hundred forty".