2784245 has 4 divisors (see below), whose sum is σ = 3341100. Its totient is φ = 2227392.

The previous prime is 2784239. The next prime is 2784253. The reversal of 2784245 is 5424872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1739761 + 1044484 = 1319^2 + 1022^2 .

It is a cyclic number.

It is not a de Polignac number, because 2784245 - 2⁶ = 2784181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278420 + ... + 278429.

It is an arithmetic number, because the mean of its divisors is an integer number (835275).

2^2784245 is an apocalyptic number.

It is an amenable number.

2784245 is a deficient number, since it is larger than the sum of its proper divisors (556855).

2784245 is an equidigital number, since it uses as much as digits as its factorization.

2784245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556854.

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

The square root of 2784245 is about 1668.6057053720. The cubic root of 2784245 is about 140.6811196588.

The spelling of 2784245 in words is "two million, seven hundred eighty-four thousand, two hundred forty-five".