2755638140 has 24 divisors (see below), whose sum is σ = 5805702672. Its totient is φ = 1098662400.

The previous prime is 2755638133. The next prime is 2755638157. The reversal of 2755638140 is 418365572.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218261 + ... + 230540.

It is an arithmetic number, because the mean of its divisors is an integer number (241904278).

Almost surely, 2^2755638140 is an apocalyptic number.

2755638140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2755638140 is an abundant number, since it is smaller than the sum of its proper divisors (3050064532).

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

2755638140 is a wasteful number, since it uses less digits than its factorization.

2755638140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449117 (or 449115 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 2755638140 is about 52494.1724384717. The cubic root of 2755638140 is about 1401.9764838482.

The spelling of 2755638140 in words is "two billion, seven hundred fifty-five million, six hundred thirty-eight thousand, one hundred forty".