2777228780 has 12 divisors (see below), whose sum is σ = 5832180480. Its totient is φ = 1110891504.

The previous prime is 2777228747. The next prime is 2777228807. The reversal of 2777228780 is 878227772.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69430700 + ... + 69430739.

It is an arithmetic number, because the mean of its divisors is an integer number (486015040).

Almost surely, 2^2777228780 is an apocalyptic number.

2777228780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2777228780 is an abundant number, since it is smaller than the sum of its proper divisors (3054951700).

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

2777228780 is a wasteful number, since it uses less digits than its factorization.

2777228780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138861448 (or 138861446 counting only the distinct ones).

The product of its (nonzero) digits is 1229312, while the sum is 50.

The square root of 2777228780 is about 52699.4191618845. The cubic root of 2777228780 is about 1405.6284942028.

The spelling of 2777228780 in words is "two billion, seven hundred seventy-seven million, two hundred twenty-eight thousand, seven hundred eighty".