2778055028 has 24 divisors (see below), whose sum is σ = 5559036672. Its totient is φ = 1189967904.

The previous prime is 2778055019. The next prime is 2778055031. The reversal of 2778055028 is 8205508772.

It is a self number, because there is not a number n which added to its sum of digits gives 2778055028.

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, 30101 + ... + 80387.

It is an arithmetic number, because the mean of its divisors is an integer number (231626528).

Almost surely, 2^2778055028 is an apocalyptic number.

2778055028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2778055028 is an abundant number, since it is smaller than the sum of its proper divisors (2780981644).

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

2778055028 is a wasteful number, since it uses less digits than its factorization.

2778055028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52271 (or 52269 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 2778055028 is about 52707.2578303975. The cubic root of 2778055028 is about 1405.7678756591.

The spelling of 2778055028 in words is "two billion, seven hundred seventy-eight million, fifty-five thousand, twenty-eight".