2778112 has 22 divisors (see below), whose sum is σ = 5555558. Its totient is φ = 1388544.

The previous prime is 2778109. The next prime is 2778121. The reversal of 2778112 is 2118772.

It can be written as a sum of positive squares in only one way, i.e., 2768896 + 9216 = 1664^2 + 96^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333 + ... + 2380.

2^2778112 is an apocalyptic number.

It is an amenable number.

2778112 is a deficient number, since it is larger than the sum of its proper divisors (2777446).

2778112 is an equidigital number, since it uses as much as digits as its factorization.

2778112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733 (or 2715 counting only the distinct ones).

The product of its digits is 1568, while the sum is 28.

The square root of 2778112 is about 1666.7669303175. The cubic root of 2778112 is about 140.5777485363.

The spelling of 2778112 in words is "two million, seven hundred seventy-eight thousand, one hundred twelve".