1998016 has 14 divisors (see below), whose sum is σ = 3964940. Its totient is φ = 998976.

The previous prime is 1997999. The next prime is 1998019. The reversal of 1998016 is 6108991.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1998019) 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 as a sum of consecutive naturals, namely, 15546 + ... + 15673.

It is an arithmetic number, because the mean of its divisors is an integer number (283210).

2^1998016 is an apocalyptic number.

1998016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1998016 is a deficient number, since it is larger than the sum of its proper divisors (1966924).

1998016 is an equidigital number, since it uses as much as digits as its factorization.

1998016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31231 (or 31221 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1998016 is about 1413.5119384002. The cubic root of 1998016 is about 125.9504298165.

The spelling of 1998016 in words is "one million, nine hundred ninety-eight thousand, sixteen".