2748771840 has 80 divisors (see below), whose sum is σ = 8787504528. Its totient is φ = 733003776.

The previous prime is 2748771811. The next prime is 2748771877. The reversal of 2748771840 is 481778472.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2748771840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171277 + ... + 186636.

Almost surely, 2^2748771840 is an apocalyptic number.

2748771840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2748771840 is an abundant number, since it is smaller than the sum of its proper divisors (6038732688).

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

2748771840 is an equidigital number, since it uses as much as digits as its factorization.

2748771840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357939 (or 357923 counting only the distinct ones).

The product of its (nonzero) digits is 702464, while the sum is 48.

The square root of 2748771840 is about 52428.7310546422. The cubic root of 2748771840 is about 1400.8110674454.

The spelling of 2748771840 in words is "two billion, seven hundred forty-eight million, seven hundred seventy-one thousand, eight hundred forty".