2782845 has 48 divisors (see below), whose sum is σ = 5346432. Its totient is φ = 1330560.

The previous prime is 2782841. The next prime is 2782847. The reversal of 2782845 is 5482872.

It is a happy number.

It is not a de Polignac number, because 2782845 - 2² = 2782841 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

2782845 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39160 + ... + 39230.

It is an arithmetic number, because the mean of its divisors is an integer number (111384).

2^2782845 is an apocalyptic number.

It is an amenable number.

2782845 is a deficient number, since it is larger than the sum of its proper divisors (2563587).

2782845 is a wasteful number, since it uses less digits than its factorization.

2782845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 159 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 2782845 is about 1668.1861406929. The cubic root of 2782845 is about 140.6575361753.

The spelling of 2782845 in words is "two million, seven hundred eighty-two thousand, eight hundred forty-five".