2755786280 has 64 divisors (see below), whose sum is σ = 6696844560. Its totient is φ = 1014571008.

The previous prime is 2755786273. The next prime is 2755786283. The reversal of 2755786280 is 826875572.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 858138436 + 1897647844 = 29294^2 + 43562^2 .

It is not an unprimeable number, because it can be changed into a prime (2755786283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176054 + ... + 191066.

Almost surely, 2^2755786280 is an apocalyptic number.

2755786280 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 2755786280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3348422280).

2755786280 is an abundant number, since it is smaller than the sum of its proper divisors (3941058280).

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

2755786280 is a wasteful number, since it uses less digits than its factorization.

2755786280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15390 (or 15386 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 50.

The square root of 2755786280 is about 52495.5834332756. The cubic root of 2755786280 is about 1402.0016062898.

The spelling of 2755786280 in words is "two billion, seven hundred fifty-five million, seven hundred eighty-six thousand, two hundred eighty".