1820886 has 16 divisors (see below), whose sum is σ = 3666864. Its totient is φ = 602784.

The previous prime is 1820869. The next prime is 1820891. The reversal of 1820886 is 6880281.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25 + ... + 1908.

It is an arithmetic number, because the mean of its divisors is an integer number (229179).

2^1820886 is an apocalyptic number.

1820886 is an abundant number, since it is smaller than the sum of its proper divisors (1845978).

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

1820886 is a wasteful number, since it uses less digits than its factorization.

1820886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 1820886 is about 1349.4020898161. The cubic root of 1820886 is about 122.1127239076.

The spelling of 1820886 in words is "one million, eight hundred twenty thousand, eight hundred eighty-six".