1820082 has 48 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 522720.

The previous prime is 1820051. The next prime is 1820087. The reversal of 1820082 is 2800281.

It is not an unprimeable number, because it can be changed into a prime (1820087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16644 + ... + 16752.

It is an arithmetic number, because the mean of its divisors is an integer number (87780).

2^1820082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1820082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106720).

1820082 is an abundant number, since it is smaller than the sum of its proper divisors (2393358).

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

1820082 is a wasteful number, since it uses less digits than its factorization.

1820082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 1820082 is about 1349.1041472029. The cubic root of 1820082 is about 122.0947485770.

It can be divided in two parts, 18 and 20082, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 1820082 in words is "one million, eight hundred twenty thousand, eighty-two".