11982115 has 4 divisors (see below), whose sum is σ = 14378544. Its totient is φ = 9585688.

The previous prime is 11982109. The next prime is 11982163. The reversal of 11982115 is 51128911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51128911 = 17 ⋅3007583.

It is a cyclic number.

It is not a de Polignac number, because 11982115 - 2³ = 11982107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198207 + ... + 1198216.

It is an arithmetic number, because the mean of its divisors is an integer number (3594636).

Almost surely, 2^11982115 is an apocalyptic number.

11982115 is a deficient number, since it is larger than the sum of its proper divisors (2396429).

11982115 is an equidigital number, since it uses as much as digits as its factorization.

11982115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396428.

The product of its digits is 720, while the sum is 28.

The square root of 11982115 is about 3461.5191751599. The cubic root of 11982115 is about 228.8290518781.

The spelling of 11982115 in words is "eleven million, nine hundred eighty-two thousand, one hundred fifteen".