118287130 has 16 divisors (see below), whose sum is σ = 229295304. Its totient is φ = 43675200.

The previous prime is 118287121. The next prime is 118287131. The reversal of 118287130 is 31782811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29192409 + 89094721 = 5403^2 + 9439^2 .

It is a junction number, because it is equal to n+sod(n) for n = 118287092 and 118287101.

It is not an unprimeable number, because it can be changed into a prime (118287131) 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, 454821 + ... + 455080.

Almost surely, 2^118287130 is an apocalyptic number.

118287130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118287130 is a deficient number, since it is larger than the sum of its proper divisors (111008174).

118287130 is a wasteful number, since it uses less digits than its factorization.

118287130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909921.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 118287130 is about 10875.9886906892. The cubic root of 118287130 is about 490.8843255890.

The spelling of 118287130 in words is "one hundred eighteen million, two hundred eighty-seven thousand, one hundred thirty".