118587215 has 4 divisors (see below), whose sum is σ = 142304664. Its totient is φ = 94869768.

The previous prime is 118587199. The next prime is 118587229. The reversal of 118587215 is 512785811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118587215 - 2⁴ = 118587199 is a prime.

It is a super-2 number, since 2×118587215² = 28125855122912450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11858717 + ... + 11858726.

It is an arithmetic number, because the mean of its divisors is an integer number (35576166).

Almost surely, 2^118587215 is an apocalyptic number.

118587215 is a deficient number, since it is larger than the sum of its proper divisors (23717449).

118587215 is an equidigital number, since it uses as much as digits as its factorization.

118587215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23717448.

The product of its digits is 22400, while the sum is 38.

The square root of 118587215 is about 10889.7757093523. The cubic root of 118587215 is about 491.2990864887.

The spelling of 118587215 in words is "one hundred eighteen million, five hundred eighty-seven thousand, two hundred fifteen".