1806880 has 48 divisors (see below), whose sum is σ = 4463424. Its totient is φ = 689920.

The previous prime is 1806877. The next prime is 1806887. The reversal of 1806880 is 886081.

It is not an unprimeable number, because it can be changed into a prime (1806887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3435 + ... + 3925.

It is an arithmetic number, because the mean of its divisors is an integer number (92988).

2^1806880 is an apocalyptic number.

1806880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1806880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2231712).

1806880 is an abundant number, since it is smaller than the sum of its proper divisors (2656544).

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

1806880 is a wasteful number, since it uses less digits than its factorization.

1806880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1806880 is about 1344.2023657173. The cubic root of 1806880 is about 121.7988263867.

The spelling of 1806880 in words is "one million, eight hundred six thousand, eight hundred eighty".