1806980 has 24 divisors (see below), whose sum is σ = 4337088. Its totient is φ = 619488.

The previous prime is 1806977. The next prime is 1807027. The reversal of 1806980 is 896081.

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, 6314 + ... + 6593.

It is an arithmetic number, because the mean of its divisors is an integer number (180712).

2^1806980 is an apocalyptic number.

1806980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1806980 is an abundant number, since it is smaller than the sum of its proper divisors (2530108).

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

1806980 is a wasteful number, since it uses less digits than its factorization.

1806980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12923 (or 12921 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1806980 is about 1344.2395619829. The cubic root of 1806980 is about 121.8010732908.

The spelling of 1806980 in words is "one million, eight hundred six thousand, nine hundred eighty".