1822660 has 48 divisors (see below), whose sum is σ = 4483584. Its totient is φ = 609408.

The previous prime is 1822649. The next prime is 1822661. The reversal of 1822660 is 662281.

It is not an unprimeable number, because it can be changed into a prime (1822661) by changing a digit.

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, 6442 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (93408).

2^1822660 is an apocalyptic number.

1822660 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 1822660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2241792).

1822660 is an abundant number, since it is smaller than the sum of its proper divisors (2660924).

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

1822660 is a wasteful number, since it uses less digits than its factorization.

1822660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1822660 is about 1350.0592579587. The cubic root of 1822660 is about 122.1523671839.

The spelling of 1822660 in words is "one million, eight hundred twenty-two thousand, six hundred sixty".