11856115 has 4 divisors (see below), whose sum is σ = 14227344. Its totient is φ = 9484888.

The previous prime is 11856113. The next prime is 11856139. The reversal of 11856115 is 51165811.

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 11856115 - 2¹ = 11856113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11856113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1185607 + ... + 1185616.

It is an arithmetic number, because the mean of its divisors is an integer number (3556836).

Almost surely, 2^11856115 is an apocalyptic number.

11856115 is a deficient number, since it is larger than the sum of its proper divisors (2371229).

11856115 is an equidigital number, since it uses as much as digits as its factorization.

11856115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371228.

The product of its digits is 1200, while the sum is 28.

The square root of 11856115 is about 3443.2709739432. The cubic root of 11856115 is about 228.0241266661.

The spelling of 11856115 in words is "eleven million, eight hundred fifty-six thousand, one hundred fifteen".