2745040 has 20 divisors (see below), whose sum is σ = 6382404. Its totient is φ = 1097984.

The previous prime is 2745031. The next prime is 2745047. The reversal of 2745040 is 405472.

It can be written as a sum of positive squares in 2 ways, for example, as 906304 + 1838736 = 952^2 + 1356^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17077 + ... + 17236.

2^2745040 is an apocalyptic number.

2745040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2745040 is an abundant number, since it is smaller than the sum of its proper divisors (3637364).

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

2745040 is a wasteful number, since it uses less digits than its factorization.

2745040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34326 (or 34320 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 2745040 is about 1656.8162239669. The cubic root of 2745040 is about 140.0176848408.

The spelling of 2745040 in words is "two million, seven hundred forty-five thousand, forty".