1820382 has 16 divisors (see below), whose sum is σ = 3758592. Its totient is φ = 587160.

The previous prime is 1820353. The next prime is 1820387. The reversal of 1820382 is 2830281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820387) 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, 4708 + ... + 5079.

It is an arithmetic number, because the mean of its divisors is an integer number (234912).

2^1820382 is an apocalyptic number.

1820382 is an abundant number, since it is smaller than the sum of its proper divisors (1938210).

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

1820382 is a wasteful number, since it uses less digits than its factorization.

1820382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9823.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1820382 is about 1349.2153275145. The cubic root of 1820382 is about 122.1014564089.

The spelling of 1820382 in words is "one million, eight hundred twenty thousand, three hundred eighty-two".