1822000 has 40 divisors (see below), whose sum is σ = 4410432. Its totient is φ = 728000.

The previous prime is 1821997. The next prime is 1822003. The reversal of 1822000 is 2281.

It is an interprime number because it is at equal distance from previous prime (1821997) and next prime (1822003).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1822003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1545 + ... + 2455.

2^1822000 is an apocalyptic number.

1822000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1822000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2205216).

1822000 is an abundant number, since it is smaller than the sum of its proper divisors (2588432).

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

1822000 is an equidigital number, since it uses as much as digits as its factorization.

1822000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1822000 is about 1349.8148021118. The cubic root of 1822000 is about 122.1376212822.

Adding to 1822000 its reverse (2281), we get a palindrome (1824281).

The spelling of 1822000 in words is "one million, eight hundred twenty-two thousand".