2840426 has 16 divisors (see below), whose sum is σ = 4390848. Its totient is φ = 1377600.

The previous prime is 2840419. The next prime is 2840447. The reversal of 2840426 is 6240482.

It is a super-2 number, since 2×2840426² = 16136039722952, which contains 22 as substring.

2840426 is a modest number, since divided by 426 gives 284 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2840395 and 2840404.

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, 11666 + ... + 11906.

It is an arithmetic number, because the mean of its divisors is an integer number (274428).

2^2840426 is an apocalyptic number.

2840426 is a deficient number, since it is larger than the sum of its proper divisors (1550422).

2840426 is a wasteful number, since it uses less digits than its factorization.

2840426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 2840426 is about 1685.3563421425. The cubic root of 2840426 is about 141.6210553664.

The spelling of 2840426 in words is "two million, eight hundred forty thousand, four hundred twenty-six".