2779353820 has 48 divisors (see below), whose sum is σ = 6228059040. Its totient is φ = 1038790656.

The previous prime is 2779353803. The next prime is 2779353847. The reversal of 2779353820 is 283539772.

2779353820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22357 + ... + 77836.

It is an arithmetic number, because the mean of its divisors is an integer number (129751230).

Almost surely, 2^2779353820 is an apocalyptic number.

2779353820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2779353820 is an abundant number, since it is smaller than the sum of its proper divisors (3448705220).

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

2779353820 is a wasteful number, since it uses less digits than its factorization.

2779353820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100294 (or 100292 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 2779353820 is about 52719.5771986081. The cubic root of 2779353820 is about 1405.9869156703.

The spelling of 2779353820 in words is "two billion, seven hundred seventy-nine million, three hundred fifty-three thousand, eight hundred twenty".