1806560 has 48 divisors (see below), whose sum is σ = 4880736. Its totient is φ = 619008.

The previous prime is 1806557. The next prime is 1806569. The reversal of 1806560 is 656081.

1806560 = T₆₃ + T₆₄ + ... + T₂₂₂.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806569) 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, 314 + ... + 1926.

It is an arithmetic number, because the mean of its divisors is an integer number (101682).

2^1806560 is an apocalyptic number.

1806560 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 1806560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2440368).

1806560 is an abundant number, since it is smaller than the sum of its proper divisors (3074176).

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

1806560 is a wasteful number, since it uses less digits than its factorization.

1806560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1806560 is about 1344.0833307500. The cubic root of 1806560 is about 121.7916357366.

The spelling of 1806560 in words is "one million, eight hundred six thousand, five hundred sixty".