1806250 has 36 divisors (see below), whose sum is σ = 3597426. Its totient is φ = 680000.

The previous prime is 1806247. The next prime is 1806251. The reversal of 1806250 is 526081.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 344569 + 1461681 = 587^2 + 1209^2 .

It is not an unprimeable number, because it can be changed into a prime (1806251) 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 17 ways as a sum of consecutive naturals, for example, 106242 + ... + 106258.

2^1806250 is an apocalyptic number.

1806250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1806250 is a deficient number, since it is larger than the sum of its proper divisors (1791176).

1806250 is an frugal number, since it uses more digits than its factorization.

1806250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1806250 is about 1343.9680055716. The cubic root of 1806250 is about 121.7846689846.

The spelling of 1806250 in words is "one million, eight hundred six thousand, two hundred fifty".