1812426 has 32 divisors (see below), whose sum is σ = 4520448. Its totient is φ = 470640.

The previous prime is 1812409. The next prime is 1812431. The reversal of 1812426 is 6242181.

It is a junction number, because it is equal to n+sod(n) for n = 1812396 and 1812405.

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 15 ways as a sum of consecutive naturals, for example, 1500 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (141264).

2^1812426 is an apocalyptic number.

1812426 is an abundant number, since it is smaller than the sum of its proper divisors (2708022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1812426 is a wasteful number, since it uses less digits than its factorization.

1812426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946.

The product of its digits is 768, while the sum is 24.

The square root of 1812426 is about 1346.2637185931. The cubic root of 1812426 is about 121.9233147035.

The spelling of 1812426 in words is "one million, eight hundred twelve thousand, four hundred twenty-six".