118280987 has 8 divisors (see below), whose sum is σ = 129122112. Its totient is φ = 107454600.

The previous prime is 118280887. The next prime is 118280993. The reversal of 118280987 is 789082811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118280987 - 2¹⁰ = 118279963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118280287) 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, 19448 + ... + 24794.

It is an arithmetic number, because the mean of its divisors is an integer number (16140264).

Almost surely, 2^118280987 is an apocalyptic number.

118280987 is a deficient number, since it is larger than the sum of its proper divisors (10841125).

118280987 is a wasteful number, since it uses less digits than its factorization.

118280987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7369.

The product of its (nonzero) digits is 64512, while the sum is 44.

The square root of 118280987 is about 10875.7062759161. The cubic root of 118280987 is about 490.8758277510.

The spelling of 118280987 in words is "one hundred eighteen million, two hundred eighty thousand, nine hundred eighty-seven".