2787012 has 18 divisors (see below), whose sum is σ = 7045038. Its totient is φ = 928992.

The previous prime is 2786981. The next prime is 2787013. The reversal of 2787012 is 2107872.

It can be written as a sum of positive squares in only one way, i.e., 2359296 + 427716 = 1536^2 + 654^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2787013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38673 + ... + 38744.

It is an arithmetic number, because the mean of its divisors is an integer number (391391).

2^2787012 is an apocalyptic number.

It is an amenable number.

2787012 is an abundant number, since it is smaller than the sum of its proper divisors (4258026).

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

2787012 is a wasteful number, since it uses less digits than its factorization.

2787012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77427 (or 77422 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 2787012 is about 1669.4346348390. The cubic root of 2787012 is about 140.7277074864.

The spelling of 2787012 in words is "two million, seven hundred eighty-seven thousand, twelve".