2782445 has 8 divisors (see below), whose sum is σ = 3373944. Its totient is φ = 2202624.

The previous prime is 2782421. The next prime is 2782469. The reversal of 2782445 is 5442872.

It is an interprime number because it is at equal distance from previous prime (2782421) and next prime (2782469).

It can be written as a sum of positive squares in 4 ways, for example, as 6889 + 2775556 = 83^2 + 1666^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2782445 - 2²⁰ = 1733869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2384 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (421743).

2^2782445 is an apocalyptic number.

It is an amenable number.

2782445 is a deficient number, since it is larger than the sum of its proper divisors (591499).

2782445 is an equidigital number, since it uses as much as digits as its factorization.

2782445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5839.

The product of its digits is 17920, while the sum is 32.

The square root of 2782445 is about 1668.0662456869. The cubic root of 2782445 is about 140.6507965844.

The spelling of 2782445 in words is "two million, seven hundred eighty-two thousand, four hundred forty-five".