1980016 has 20 divisors (see below), whose sum is σ = 3919392. Its totient is φ = 968576.

The previous prime is 1979993. The next prime is 1980019. The reversal of 1980016 is 6100891.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980019) 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 3 ways as a sum of consecutive naturals, for example, 565 + ... + 2068.

2^1980016 is an apocalyptic number.

1980016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1980016 is a deficient number, since it is larger than the sum of its proper divisors (1939376).

1980016 is a wasteful number, since it uses less digits than its factorization.

1980016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688 (or 2682 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1980016 is about 1407.1304132880. The cubic root of 1980016 is about 125.5710618011.

The spelling of 1980016 in words is "one million, nine hundred eighty thousand, sixteen".