2755688240 has 40 divisors (see below), whose sum is σ = 6409829328. Its totient is φ = 1101784320.

The previous prime is 2755688233. The next prime is 2755688249. The reversal of 2755688240 is 428865572.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2755688249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212174 + ... + 224786.

Almost surely, 2^2755688240 is an apocalyptic number.

2755688240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2755688240 is an abundant number, since it is smaller than the sum of its proper divisors (3654141088).

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

2755688240 is a wasteful number, since it uses less digits than its factorization.

2755688240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15357 (or 15351 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 47.

The square root of 2755688240 is about 52494.6496321292. The cubic root of 2755688240 is about 1401.9849801980.

The spelling of 2755688240 in words is "two billion, seven hundred fifty-five million, six hundred eighty-eight thousand, two hundred forty".