2749447140 has 96 divisors (see below), whose sum is σ = 8763503616. Its totient is φ = 637549440.

The previous prime is 2749447139. The next prime is 2749447187. The reversal of 2749447140 is 417449472.

It is a junction number, because it is equal to n+sod(n) for n = 2749447092 and 2749447101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75382 + ... + 105741.

It is an arithmetic number, because the mean of its divisors is an integer number (91286496).

Almost surely, 2^2749447140 is an apocalyptic number.

2749447140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2749447140 is an abundant number, since it is smaller than the sum of its proper divisors (6014056476).

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

2749447140 is a wasteful number, since it uses less digits than its factorization.

2749447140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181169 (or 181167 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 2749447140 is about 52435.1708302738. The cubic root of 2749447140 is about 1400.9257720375.

The spelling of 2749447140 in words is "two billion, seven hundred forty-nine million, four hundred forty-seven thousand, one hundred forty".