2115827 has 4 divisors (see below), whose sum is σ = 2418096. Its totient is φ = 1813560.

The previous prime is 2115823. The next prime is 2115829. The reversal of 2115827 is 7285112.

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

It is not a de Polignac number, because 2115827 - 2² = 2115823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2115796 and 2115805.

It is not an unprimeable number, because it can be changed into a prime (2115823) 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, 151124 + ... + 151137.

It is an arithmetic number, because the mean of its divisors is an integer number (604524).

2^2115827 is an apocalyptic number.

2115827 is a deficient number, since it is larger than the sum of its proper divisors (302269).

2115827 is an equidigital number, since it uses as much as digits as its factorization.

2115827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302268.

The product of its digits is 1120, while the sum is 26.

The square root of 2115827 is about 1454.5882578929. The cubic root of 2115827 is about 128.3788216025.

The spelling of 2115827 in words is "two million, one hundred fifteen thousand, eight hundred twenty-seven".