2787044 has 12 divisors (see below), whose sum is σ = 5252604. Its totient is φ = 1286304.

The previous prime is 2787023. The next prime is 2787049. The reversal of 2787044 is 4407872.

It can be written as a sum of positive squares in 2 ways, for example, as 1532644 + 1254400 = 1238^2 + 1120^2 .

It is a super-2 number, since 2×2787044² = 15535228515872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2787044.

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, 26747 + ... + 26850.

It is an arithmetic number, because the mean of its divisors is an integer number (437717).

2^2787044 is an apocalyptic number.

It is an amenable number.

2787044 is a deficient number, since it is larger than the sum of its proper divisors (2465560).

2787044 is a wasteful number, since it uses less digits than its factorization.

2787044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53614 (or 53612 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 2787044 is about 1669.4442188944. Note that the first 3 decimals coincide. The cubic root of 2787044 is about 140.7282460882.

The spelling of 2787044 in words is "two million, seven hundred eighty-seven thousand, forty-four".