1980008 has 8 divisors (see below), whose sum is σ = 3712530. Its totient is φ = 990000.

The previous prime is 1979993. The next prime is 1980019. The reversal of 1980008 is 8000891.

It can be written as a sum of positive squares in only one way, i.e., 1747684 + 232324 = 1322^2 + 482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 7.

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 as a sum of consecutive naturals, namely, 123743 + ... + 123758.

2^1980008 is an apocalyptic number.

It is an amenable number.

1980008 is a deficient number, since it is larger than the sum of its proper divisors (1732522).

1980008 is a wasteful number, since it uses less digits than its factorization.

1980008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247507 (or 247503 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1980008 is about 1407.1275706204. The cubic root of 1980008 is about 125.5708926830.

Adding to 1980008 its reverse (8000891), we get a palindrome (9980899).

The spelling of 1980008 in words is "one million, nine hundred eighty thousand, eight".