1982808 has 24 divisors (see below), whose sum is σ = 5370300. Its totient is φ = 660912.

The previous prime is 1982803. The next prime is 1982809. The reversal of 1982808 is 8082891.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13698 + ... + 13841.

2^1982808 is an apocalyptic number.

1982808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1982808 is an abundant number, since it is smaller than the sum of its proper divisors (3387492).

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

1982808 is a wasteful number, since it uses less digits than its factorization.

1982808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27551 (or 27544 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1982808 is about 1408.1221537921. The cubic root of 1982808 is about 125.6300562307.

The spelling of 1982808 in words is "one million, nine hundred eighty-two thousand, eight hundred eight".