2788047 has 16 divisors (see below), whose sum is σ = 4264960. Its totient is φ = 1798200.

The previous prime is 2788033. The next prime is 2788057. The reversal of 2788047 is 7408872.

It is not a de Polignac number, because 2788047 - 2⁷ = 2787919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829 + ... + 2502.

It is an arithmetic number, because the mean of its divisors is an integer number (266560).

2^2788047 is an apocalyptic number.

2788047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2788047 is a deficient number, since it is larger than the sum of its proper divisors (1476913).

2788047 is a wasteful number, since it uses less digits than its factorization.

2788047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2788047 is about 1669.7445912474. The cubic root of 2788047 is about 140.7451258004.

The spelling of 2788047 in words is "two million, seven hundred eighty-eight thousand, forty-seven".