2278868 has 6 divisors (see below), whose sum is σ = 3988026. Its totient is φ = 1139432.

The previous prime is 2278847. The next prime is 2278877. The reversal of 2278868 is 8688722.

It can be written as a sum of positive squares in only one way, i.e., 1507984 + 770884 = 1228^2 + 878^2 .

It is a super-2 number, since 2×2278868² = 10386478722848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284855 + ... + 284862.

It is an arithmetic number, because the mean of its divisors is an integer number (664671).

2^2278868 is an apocalyptic number.

It is an amenable number.

2278868 is a deficient number, since it is larger than the sum of its proper divisors (1709158).

2278868 is a wasteful number, since it uses less digits than its factorization.

2278868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569721 (or 569719 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 2278868 is about 1509.5919978590. The cubic root of 2278868 is about 131.5951014889.

The spelling of 2278868 in words is "two million, two hundred seventy-eight thousand, eight hundred sixty-eight".