2787130 has 16 divisors (see below), whose sum is σ = 5064840. Its totient is φ = 1104192.

The previous prime is 2787121. The next prime is 2787143. The reversal of 2787130 is 317872.

It is a happy number.

2787130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2368521 + 418609 = 1539^2 + 647^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 2368.

2^2787130 is an apocalyptic number.

2787130 is a deficient number, since it is larger than the sum of its proper divisors (2277710).

2787130 is a wasteful number, since it uses less digits than its factorization.

2787130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 2787130 is about 1669.4699757708. The cubic root of 2787130 is about 140.7296935602.

The spelling of 2787130 in words is "two million, seven hundred eighty-seven thousand, one hundred thirty".