2278915 has 4 divisors (see below), whose sum is σ = 2734704. Its totient is φ = 1823128.

The previous prime is 2278891. The next prime is 2278943. The reversal of 2278915 is 5198722.

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 2278915 - 2¹¹ = 2276867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227887 + ... + 227896.

It is an arithmetic number, because the mean of its divisors is an integer number (683676).

2^2278915 is an apocalyptic number.

2278915 is a deficient number, since it is larger than the sum of its proper divisors (455789).

2278915 is an equidigital number, since it uses as much as digits as its factorization.

2278915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455788.

The product of its digits is 10080, while the sum is 34.

The square root of 2278915 is about 1509.6075648989. The cubic root of 2278915 is about 131.5960061672.

The spelling of 2278915 in words is "two million, two hundred seventy-eight thousand, nine hundred fifteen".