2778026278 has 16 divisors (see below), whose sum is σ = 4195642176. Its totient is φ = 1379491560.

The previous prime is 2778026243. The next prime is 2778026297. The reversal of 2778026278 is 8726208772.

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, 677013 + ... + 681103.

It is an arithmetic number, because the mean of its divisors is an integer number (262227636).

Almost surely, 2^2778026278 is an apocalyptic number.

2778026278 is a deficient number, since it is larger than the sum of its proper divisors (1417615898).

2778026278 is a wasteful number, since it uses less digits than its factorization.

2778026278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339.

The product of its (nonzero) digits is 1053696, while the sum is 49.

The square root of 2778026278 is about 52706.9850968541. The cubic root of 2778026278 is about 1405.7630262272.

The spelling of 2778026278 in words is "two billion, seven hundred seventy-eight million, twenty-six thousand, two hundred seventy-eight".