1980104 has 32 divisors (see below), whose sum is σ = 4468800. Its totient is φ = 803520.

The previous prime is 1980103. The next prime is 1980113. The reversal of 1980104 is 4010891.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 1980104.

It is not an unprimeable number, because it can be changed into a prime (1980101) by changing a digit.

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, 134 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (139650).

2^1980104 is an apocalyptic number.

1980104 is a gapful number since it is divisible by the number (14) 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 1980104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2234400).

1980104 is an abundant number, since it is smaller than the sum of its proper divisors (2488696).

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

1980104 is a wasteful number, since it uses less digits than its factorization.

1980104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1980104 is about 1407.1616822526. The cubic root of 1980104 is about 125.5729220706.

Adding to 1980104 its reverse (4010891), we get a palindrome (5990995).

The spelling of 1980104 in words is "one million, nine hundred eighty thousand, one hundred four".