2775000020 has 48 divisors (see below), whose sum is σ = 6314367360. Its totient is φ = 1018313856.

The previous prime is 2775000017. The next prime is 2775000079. The reversal of 2775000020 is 200005772.

2775000020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2775000020² = 15401250222000000800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2775000020.

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, 9641 + ... + 75119.

It is an arithmetic number, because the mean of its divisors is an integer number (131549320).

Almost surely, 2^2775000020 is an apocalyptic number.

2775000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2775000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3157183680).

2775000020 is an abundant number, since it is smaller than the sum of its proper divisors (3539367340).

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

2775000020 is a wasteful number, since it uses less digits than its factorization.

2775000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65664 (or 65662 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 2775000020 is about 52678.2689540953. The cubic root of 2775000020 is about 1405.2523822312.

Adding to 2775000020 its reverse (200005772), we get a palindrome (2975005792).

The spelling of 2775000020 in words is "two billion, seven hundred seventy-five million, twenty", and thus it is an aban number.