1968816 has 20 divisors (see below), whose sum is σ = 5086232. Its totient is φ = 656256.

The previous prime is 1968803. The next prime is 1968817. The reversal of 1968816 is 6188691.

It is not an unprimeable number, because it can be changed into a prime (1968817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20461 + ... + 20556.

2^1968816 is an apocalyptic number.

1968816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1968816 is an abundant number, since it is smaller than the sum of its proper divisors (3117416).

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

1968816 is a wasteful number, since it uses less digits than its factorization.

1968816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41028 (or 41022 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 1968816 is about 1403.1450388324. The cubic root of 1968816 is about 125.3338488988. Note that the first 3 decimals are identical.

The spelling of 1968816 in words is "one million, nine hundred sixty-eight thousand, eight hundred sixteen".