1820846 has 8 divisors (see below), whose sum is σ = 2875080. Its totient is φ = 862488.

The previous prime is 1820843. The next prime is 1820857. The reversal of 1820846 is 6480281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23921 + ... + 23996.

It is an arithmetic number, because the mean of its divisors is an integer number (359385).

2^1820846 is an apocalyptic number.

1820846 is a deficient number, since it is larger than the sum of its proper divisors (1054234).

1820846 is a wasteful number, since it uses less digits than its factorization.

1820846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47938.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1820846 is about 1349.3872683555. The cubic root of 1820846 is about 122.1118297377. Note that the first 3 decimals are identical.

The spelling of 1820846 in words is "one million, eight hundred twenty thousand, eight hundred forty-six".