1980560 has 40 divisors (see below), whose sum is σ = 4850880. Its totient is φ = 749952.

The previous prime is 1980529. The next prime is 1980577. The reversal of 1980560 is 650891.

It is a tau number, because it is divible by the number of its divisors (40).

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, 869 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (121272).

2^1980560 is an apocalyptic number.

1980560 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 1980560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2425440).

1980560 is an abundant number, since it is smaller than the sum of its proper divisors (2870320).

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

1980560 is a wasteful number, since it uses less digits than its factorization.

1980560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1980560 is about 1407.3237012145. The cubic root of 1980560 is about 125.5825607659.

The spelling of 1980560 in words is "one million, nine hundred eighty thousand, five hundred sixty".