2840434 has 8 divisors (see below), whose sum is σ = 4407660. Its totient is φ = 1371216.

The previous prime is 2840419. The next prime is 2840447. The reversal of 2840434 is 4340482.

It can be written as a sum of positive squares in 2 ways, for example, as 2640625 + 199809 = 1625^2 + 447^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2840399 and 2840408.

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 3 ways as a sum of consecutive naturals, for example, 24429 + ... + 24544.

2^2840434 is an apocalyptic number.

2840434 is a deficient number, since it is larger than the sum of its proper divisors (1567226).

2840434 is a wasteful number, since it uses less digits than its factorization.

2840434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49004.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2840434 is about 1685.3587155262. The cubic root of 2840434 is about 141.6211883239.

The spelling of 2840434 in words is "two million, eight hundred forty thousand, four hundred thirty-four".