1220080 has 40 divisors (see below), whose sum is σ = 2883744. Its totient is φ = 480000.

The previous prime is 1220077. The next prime is 1220099. The reversal of 1220080 is 800221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220080.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8005 + ... + 8155.

2^1220080 is an apocalyptic number.

1220080 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 1220080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441872).

1220080 is an abundant number, since it is smaller than the sum of its proper divisors (1663664).

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

1220080 is a wasteful number, since it uses less digits than its factorization.

1220080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1220080 is about 1104.5723154235. The cubic root of 1220080 is about 106.8553085479.

The spelling of 1220080 in words is "one million, two hundred twenty thousand, eighty".