2078915 has 4 divisors (see below), whose sum is σ = 2494704. Its totient is φ = 1663128.

The previous prime is 2078887. The next prime is 2078917. The reversal of 2078915 is 5198702.

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 2078915 - 2⁶ = 2078851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078917) by changing a digit.

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, 207887 + ... + 207896.

It is an arithmetic number, because the mean of its divisors is an integer number (623676).

2^2078915 is an apocalyptic number.

2078915 is a deficient number, since it is larger than the sum of its proper divisors (415789).

2078915 is an equidigital number, since it uses as much as digits as its factorization.

2078915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415788.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2078915 is about 1441.8443050482. The cubic root of 2078915 is about 127.6278865489.

The spelling of 2078915 in words is "two million, seventy-eight thousand, nine hundred fifteen".