1873206 has 40 divisors (see below), whose sum is σ = 4344384. Its totient is φ = 602640.

The previous prime is 1873181. The next prime is 1873211. The reversal of 1873206 is 6023781.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1873206.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 4836 + ... + 5208.

2^1873206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1873206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2172192).

1873206 is an abundant number, since it is smaller than the sum of its proper divisors (2471178).

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

1873206 is a wasteful number, since it uses less digits than its factorization.

1873206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1873206 is about 1368.6511608149. The cubic root of 1873206 is about 123.2712633050.

1873206 divided by its sum of digits (27) gives a triangular number (69378 = T₃₇₂).

Adding to 1873206 its reverse (6023781), we get a palindrome (7896987).

The spelling of 1873206 in words is "one million, eight hundred seventy-three thousand, two hundred six".