1812322 has 8 divisors (see below), whose sum is σ = 2806272. Its totient is φ = 876900.

The previous prime is 1812311. The next prime is 1812341. The reversal of 1812322 is 2232181.

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

It is a super-2 number, since 2×1812322² = 6569022063368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1812322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14554 + ... + 14677.

It is an arithmetic number, because the mean of its divisors is an integer number (350784).

2^1812322 is an apocalyptic number.

1812322 is a deficient number, since it is larger than the sum of its proper divisors (993950).

1812322 is a wasteful number, since it uses less digits than its factorization.

1812322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29264.

The product of its digits is 192, while the sum is 19.

The square root of 1812322 is about 1346.2250926201. The cubic root of 1812322 is about 121.9209826051.

It can be divided in two parts, 18123 and 22, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 1812322 in words is "one million, eight hundred twelve thousand, three hundred twenty-two".