1980580 has 72 divisors (see below), whose sum is σ = 5056128. Its totient is φ = 649152.

The previous prime is 1980577. The next prime is 1980581. The reversal of 1980580 is 850891.

1980580 = T₄₃₅ + T₄₃₆ + ... + T₄₅₄.

It is a super-3 number, since 3×1980580³ = 23307646483233336000, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1980581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42117 + ... + 42163.

It is an arithmetic number, because the mean of its divisors is an integer number (70224).

2^1980580 is an apocalyptic number.

1980580 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 1980580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528064).

1980580 is an abundant number, since it is smaller than the sum of its proper divisors (3075548).

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

1980580 is a wasteful number, since it uses less digits than its factorization.

1980580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1980580 is about 1407.3308068823. The cubic root of 1980580 is about 125.5829834818.

The spelling of 1980580 in words is "one million, nine hundred eighty thousand, five hundred eighty".