1822406 has 8 divisors (see below), whose sum is σ = 2739360. Its totient is φ = 909288.

The previous prime is 1822393. The next prime is 1822411. The reversal of 1822406 is 6042281.

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

It is a congruent number.

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, 1235 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (342420).

2^1822406 is an apocalyptic number.

1822406 is a deficient number, since it is larger than the sum of its proper divisors (916954).

1822406 is a wasteful number, since it uses less digits than its factorization.

1822406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1822406 is about 1349.9651847363. The cubic root of 1822406 is about 122.1466926674.

Adding to 1822406 its reverse (6042281), we get a palindrome (7864687).

The spelling of 1822406 in words is "one million, eight hundred twenty-two thousand, four hundred six".