1806246 has 64 divisors (see below), whose sum is σ = 4515840. Its totient is φ = 531360.

The previous prime is 1806241. The next prime is 1806247. The reversal of 1806246 is 6426081.

It is a super-2 number, since 2×1806246² = 6525049225032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21721 + ... + 21803.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2^1806246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1806246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2257920).

1806246 is an abundant number, since it is smaller than the sum of its proper divisors (2709594).

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

1806246 is a wasteful number, since it uses less digits than its factorization.

1806246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1806246 is about 1343.9665174401. The cubic root of 1806246 is about 121.7845790858.

The spelling of 1806246 in words is "one million, eight hundred six thousand, two hundred forty-six".