2747581820 has 24 divisors (see below), whose sum is σ = 6109329744. Its totient is φ = 1034383616.

The previous prime is 2747581819. The next prime is 2747581861. The reversal of 2747581820 is 281857472.

2747581820 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 7 ways as a sum of consecutive naturals, for example, 4040222 + ... + 4040901.

It is an arithmetic number, because the mean of its divisors is an integer number (254555406).

Almost surely, 2^2747581820 is an apocalyptic number.

2747581820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2747581820 is an abundant number, since it is smaller than the sum of its proper divisors (3361747924).

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

2747581820 is a wasteful number, since it uses less digits than its factorization.

2747581820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8081149 (or 8081147 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 44.

The square root of 2747581820 is about 52417.3808960349. The cubic root of 2747581820 is about 1400.6088882051.

The spelling of 2747581820 in words is "two billion, seven hundred forty-seven million, five hundred eighty-one thousand, eight hundred twenty".