118403980 has 24 divisors (see below), whose sum is σ = 263275488. Its totient is φ = 44575488.

The previous prime is 118403933. The next prime is 118403981. The reversal of 118403980 is 89304811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (118403981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173784 + ... + 174463.

It is an arithmetic number, because the mean of its divisors is an integer number (10969812).

Almost surely, 2^118403980 is an apocalyptic number.

118403980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118403980 is an abundant number, since it is smaller than the sum of its proper divisors (144871508).

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

118403980 is a wasteful number, since it uses less digits than its factorization.

118403980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348273 (or 348271 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 118403980 is about 10881.3592900887. The cubic root of 118403980 is about 491.0459125009.

The spelling of 118403980 in words is "one hundred eighteen million, four hundred three thousand, nine hundred eighty".