2278085 has 8 divisors (see below), whose sum is σ = 2894616. Its totient is φ = 1715200.

The previous prime is 2278079. The next prime is 2278091. The reversal of 2278085 is 5808722.

It is an interprime number because it is at equal distance from previous prime (2278079) and next prime (2278091).

It can be written as a sum of positive squares in 4 ways, for example, as 312481 + 1965604 = 559^2 + 1402^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2278085 - 2⁴ = 2278069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13316 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (361827).

2^2278085 is an apocalyptic number.

It is an amenable number.

2278085 is a deficient number, since it is larger than the sum of its proper divisors (616531).

2278085 is a wasteful number, since it uses less digits than its factorization.

2278085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26823.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2278085 is about 1509.3326339810. The cubic root of 2278085 is about 131.5800281034.

The spelling of 2278085 in words is "two million, two hundred seventy-eight thousand, eighty-five".