2278857 has 8 divisors (see below), whose sum is σ = 3472576. Its totient is φ = 1302192.

The previous prime is 2278847. The next prime is 2278877. The reversal of 2278857 is 7588722.

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

It is not a de Polignac number, because 2278857 - 2⁷ = 2278729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54238 + ... + 54279.

It is an arithmetic number, because the mean of its divisors is an integer number (434072).

2^2278857 is an apocalyptic number.

It is an amenable number.

2278857 is a deficient number, since it is larger than the sum of its proper divisors (1193719).

2278857 is a wasteful number, since it uses less digits than its factorization.

2278857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108527.

The product of its digits is 62720, while the sum is 39.

The square root of 2278857 is about 1509.5883544861. The cubic root of 2278857 is about 131.5948897539.

The spelling of 2278857 in words is "two million, two hundred seventy-eight thousand, eight hundred fifty-seven".