2758755540 has 96 divisors (see below), whose sum is σ = 8143470720. Its totient is φ = 695886336.

The previous prime is 2758755509. The next prime is 2758755541. The reversal of 2758755540 is 455578572.

It is a super-2 number, since 2×2758755540² = 15221464258961383200, 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 2758755540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2758755541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 971002 + ... + 973838.

It is an arithmetic number, because the mean of its divisors is an integer number (84827820).

Almost surely, 2^2758755540 is an apocalyptic number.

2758755540 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 2758755540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4071735360).

2758755540 is an abundant number, since it is smaller than the sum of its proper divisors (5384715180).

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

2758755540 is a wasteful number, since it uses less digits than its factorization.

2758755540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3719 counting only the distinct ones).

The product of its (nonzero) digits is 1960000, while the sum is 48.

The square root of 2758755540 is about 52523.8568652379. The cubic root of 2758755540 is about 1402.5049608843.

The spelling of 2758755540 in words is "two billion, seven hundred fifty-eight million, seven hundred fifty-five thousand, five hundred forty".