2847842 has 4 divisors (see below), whose sum is σ = 4271766. Its totient is φ = 1423920.

The previous prime is 2847839. The next prime is 2847863. The reversal of 2847842 is 2487482.

2847842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2487482 = 2 ⋅1243741.

It can be written as a sum of positive squares in only one way, i.e., 2193361 + 654481 = 1481^2 + 809^2 .

It is a super-2 number, since 2×2847842² = 16220408113928, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711959 + ... + 711962.

2^2847842 is an apocalyptic number.

2847842 is a deficient number, since it is larger than the sum of its proper divisors (1423924).

2847842 is a wasteful number, since it uses less digits than its factorization.

2847842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423923.

The product of its digits is 28672, while the sum is 35.

The square root of 2847842 is about 1687.5550361396. Note that the first 3 decimals coincide. The cubic root of 2847842 is about 141.7441999271.

The spelling of 2847842 in words is "two million, eight hundred forty-seven thousand, eight hundred forty-two".