2278395 has 32 divisors (see below), whose sum is σ = 4631040. Its totient is φ = 1041120.

The previous prime is 2278379. The next prime is 2278421. The reversal of 2278395 is 5938722.

It is a happy number.

It is not a de Polignac number, because 2278395 - 2⁴ = 2278379 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 261 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (144720).

2^2278395 is an apocalyptic number.

2278395 is an abundant number, since it is smaller than the sum of its proper divisors (2352645).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2278395 is a wasteful number, since it uses less digits than its factorization.

2278395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432 (or 2426 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2278395 is about 1509.4353248815. The cubic root of 2278395 is about 131.5859962680.

The spelling of 2278395 in words is "two million, two hundred seventy-eight thousand, three hundred ninety-five".