2787040 has 24 divisors (see below), whose sum is σ = 6584760. Its totient is φ = 1114752.

The previous prime is 2787023. The next prime is 2787049. The reversal of 2787040 is 407872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787049) 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, 8550 + ... + 8869.

It is an arithmetic number, because the mean of its divisors is an integer number (274365).

2^2787040 is an apocalyptic number.

2787040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2787040 is an abundant number, since it is smaller than the sum of its proper divisors (3797720).

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

2787040 is a wasteful number, since it uses less digits than its factorization.

2787040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17434 (or 17426 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2787040 is about 1669.4430208905. The cubic root of 2787040 is about 140.7281787632.

The spelling of 2787040 in words is "two million, seven hundred eighty-seven thousand, forty".