1980004 has 36 divisors (see below), whose sum is σ = 3919860. Its totient is φ = 873600.

The previous prime is 1979993. The next prime is 1980019. The reversal of 1980004 is 4000891.

It can be written as a sum of positive squares in 6 ways, for example, as 14400 + 1965604 = 120^2 + 1402^2 .

It is a nialpdrome in base 13.

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 11 ways as a sum of consecutive naturals, for example, 19554 + ... + 19654.

It is an arithmetic number, because the mean of its divisors is an integer number (108885).

2^1980004 is an apocalyptic number.

It is an amenable number.

1980004 is a deficient number, since it is larger than the sum of its proper divisors (1939856).

1980004 is a wasteful number, since it uses less digits than its factorization.

1980004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1980004 is about 1407.1261492844. The cubic root of 1980004 is about 125.5708081237.

Adding to 1980004 its reverse (4000891), we get a palindrome (5980895).

The spelling of 1980004 in words is "one million, nine hundred eighty thousand, four".