1820852 has 24 divisors (see below), whose sum is σ = 3598560. Its totient is φ = 798560.

The previous prime is 1820843. The next prime is 1820857. The reversal of 1820852 is 2580281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820857) 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, 563 + ... + 1989.

It is an arithmetic number, because the mean of its divisors is an integer number (149940).

2^1820852 is an apocalyptic number.

It is an amenable number.

1820852 is a deficient number, since it is larger than the sum of its proper divisors (1777708).

1820852 is a wasteful number, since it uses less digits than its factorization.

1820852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1820852 is about 1349.3894915850. The cubic root of 1820852 is about 122.1119638640. Note that the first 3 decimals are identical.

The spelling of 1820852 in words is "one million, eight hundred twenty thousand, eight hundred fifty-two".