1822445 has 8 divisors (see below), whose sum is σ = 2217336. Its totient is φ = 1437696.

The previous prime is 1822441. The next prime is 1822463. The reversal of 1822445 is 5442281.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 137641 + 1684804 = 371^2 + 1298^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1822445 - 2² = 1822441 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2132 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (277167).

2^1822445 is an apocalyptic number.

It is an amenable number.

1822445 is a deficient number, since it is larger than the sum of its proper divisors (394891).

1822445 is an equidigital number, since it uses as much as digits as its factorization.

1822445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071.

The product of its digits is 2560, while the sum is 26.

The square root of 1822445 is about 1349.9796294759. The cubic root of 1822445 is about 122.1475639857.

Adding to 1822445 its product of digits (2560), we get a triangular number (1825005 = T₁₉₁₀).

The spelling of 1822445 in words is "one million, eight hundred twenty-two thousand, four hundred forty-five".