2745292840 has 48 divisors (see below), whose sum is σ = 6270887700. Its totient is φ = 1081656576.

The previous prime is 2745292831. The next prime is 2745292853. The reversal of 2745292840 is 482925472.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2745131236 + 161604 = 52394^2 + 402^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 171916 + ... + 187204.

Almost surely, 2^2745292840 is an apocalyptic number.

2745292840 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 2745292840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3135443850).

2745292840 is an abundant number, since it is smaller than the sum of its proper divisors (3525594860).

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

2745292840 is a wasteful number, since it uses less digits than its factorization.

2745292840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15434 (or 15363 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 2745292840 is about 52395.5421767921. The cubic root of 2745292840 is about 1400.2198362265.

The spelling of 2745292840 in words is "two billion, seven hundred forty-five million, two hundred ninety-two thousand, eight hundred forty".